I'm still affected by this. My test case is Ubuntu 12.04.2, 32-bit,
fully up to date as of this morning. As I write this my version of
firefox is 22.0+build2-0ubuntu.12.04.1 and my version of acroread is
9.5.5-1precise1.

When I start Firefox and open a PDF in a tab, Firefox spawns a plugin-
container for nppdf.so, and that in turn spawns an acroread. If I close
the PDF tab and wait a few seconds, acroread exits but is not
immediately reaped, so a defunct (zombie) acroread remains.

If I try to open another PDF in a tab while the zombie is present, all I
get is a black screen.

After a longer time the plugin-container exits, taking the acroread
zombie with it. After that, I can open a PDF normally again, since a new
plugin-container and acroread are created.

Disabling the out-of-process plugins feature in Firefox globally
(dom.ipc.plugins.enabled=false) seems to function as a workaround, but
blacklisting only the nppdf plugin
(dom.ipc.plugins.enabled.nppdf.so=false) still sometimes gives me a
black screen, even though a plugin-container isn't created.

** Changed in: acroread (Ubuntu)
       Status: Incomplete => Confirmed

** Also affects: firefox (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/571247

Title:
  acroread remains zombie, so pdfs won't be rendered anymore

Status in Compatibility plugin for Netscape 4 (NPAPI) plugins:
  Confirmed
Status in “acroread” package in Ubuntu:
  Confirmed
Status in “firefox” package in Ubuntu:
  New
Status in Guadalinex:
  Incomplete

Bug description:
  Binary package hint: acroread

  When I have to read more than 1 pdf (not only at the same time in
  different tabs) with the adobe reader acroread firefox plugin, I get
  some strange screens (white, black or anything non-readable).

  In Konsole (sorry for error logs length, I'm not able to sort these
  repetitive lines) :

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_get_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_hide: assertion
  `GTK_IS_WIDGET (widget)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GtkObject'

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-CRITICAL **: g_object_set_data:
  assertion `G_IS_OBJECT (object)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): GLib-GObject-WARNING **: invalid uninstantiatable
  type `(null)' in cast to `GObject'

  (acroread:21141): GLib-GObject-WARNING **: instance of invalid non-
  instantiatable type `(null)'

  (acroread:21141): GLib-GObject-CRITICAL **:
  g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE
  (instance)' failed

  (acroread:21141): Gtk-CRITICAL **: gtk_widget_destroy: assertion
  `GTK_IS_WIDGET (widget)' failed

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