I've run into this error as well.
Here's what I get when running it from gdb:
mrjb@mrjb-desktop:~$ gdb shotwell
GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software:
** Changed in: shotwell (Ubuntu)
Status: New = Invalid
** Changed in: shotwell (Ubuntu)
Importance: Undecided = Low
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Desktop Bugs, which is subscribed to shotwell in Ubuntu.
https://bugs.launchpad.net/bugs/1363251
** Bug watch added: GNOME Bug Tracker #736239
https://bugzilla.gnome.org/show_bug.cgi?id=736239
** Also affects: shotwell via
https://bugzilla.gnome.org/show_bug.cgi?id=736239
Importance: Unknown
Status: Unknown
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** Changed in: shotwell
Status: Unknown = Invalid
** Changed in: shotwell
Importance: Unknown = Medium
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Desktop Bugs, which is subscribed to shotwell in Ubuntu.
https://bugs.launchpad.net/bugs/1363251
Title: