The following is the error message I got when I ran GNOME Boxes from
terminal:
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3046 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3088 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3089 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3090 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3091 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3092 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3093 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3094 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3095 was not found when
attempting to remove it
(gnome-boxes:3277): GLib-CRITICAL **: Source ID 3096 was not found when
attempting to remove it
Boxes-Message: machine.vala:147: display trisquel_7.0_amd64.iso disconnected
It seems the messages is not helpful.
