My run.

aleksi@Oblivion:~$ gdb gwoffice
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/bin/gwoffice...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/gwoffice 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[INFO 23:24:55.089949] [Application:74] GWoffice version: 0.1
[INFO 23:24:55.090019] [Application:76] Kernel version: 3.2.0-26-generic
[New Thread 0x7fffe1b84700 (LWP 32224)]
[New Thread 0x7fffe1383700 (LWP 32225)]
[New Thread 0x7fffdbdf7700 (LWP 32227)]
[FATAL 23:24:55.279862] ___lambda51_: assertion `auth != NULL' failed
[FATAL 23:24:55.279988] GWoffice will not function properly.
[New Thread 0x7fffdb5f6700 (LWP 32228)]
[DEBUG 23:24:55.286749] [Gtk] Connecting to session manager
[DEBUG 23:24:55.297400] [GWoffice:706] Application activated
[DEBUG 23:24:55.307984] [Settings:155] Loading settings from schema 'org.gnome.gwoffice'
[New Thread 0x7fffd8c45700 (LWP 32229)]
[New Thread 0x7fffcffff700 (LWP 32230)]
[New Thread 0x7fffcf7fe700 (LWP 32231)]
[Thread 0x7fffcf7fe700 (LWP 32231) exited]
[INFO 23:24:58.622029] [libgdata] Unhandled XML in GDataDocumentsText: <docs:modifiedByMeDate>2012-07-04T20:24:59.346Z</docs:modifiedByMeDate>
[INFO 23:24:58.622131] [libgdata] Unhandled XML in GDataDocumentsText: <gd:quotaBytesUsed>0</gd:quotaBytesUsed>
[FATAL 23:24:58.631036] [Gtk] gtk_style_context_get_property: assertion `priv->widget != NULL || priv->widget_path != NULL' failed
[FATAL 23:24:58.631138] GWoffice will not function properly.
[WARN 23:24:58.631222] [GLib-GObject] /build/buildd/glib2.0-2.33.4~git20120628.d023b81a/./gobject/gtype.c:4204: type id `0' is invalid
[WARN 23:24:58.631294] [GLib-GObject] can't peek value table for type `<invalid>' which is not currently referenced

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff570ec77 in gtk_style_context_get_valist ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
(gdb) bt
#0  0x00007ffff570ec77 in gtk_style_context_get_valist ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#1  0x00007ffff570ef16 in gtk_style_context_get ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#2  0x00007ffff570f74c in gtk_style_context_get_background_color ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#3  0x000000000042cb60 in gwoffice_widgets_web_view_apply_theme ()
#4  0x000000000042c189 in gwoffice_widgets_web_view_construct ()
#5  0x000000000042c32d in gwoffice_widgets_web_view_new ()
#6  0x00000000004134cd in gwoffice_app_open_document ()
#7  0x0000000000413af2 in gwoffice_app_create_document ()
#8  0x000000000040f761 in ?? ()
#9  0x000000000040f883 in ?? ()
#10 0x00007ffff41b72e9 in g_cclosure_marshal_VOID(int0_t, void) ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007ffff41b50ea in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff41ced37 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff41cf9a4 in g_signal_emit_by_name ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff5bdfda5 in ?? () from /usr/lib/libgranite.so.0
#15 0x00007ffff56758a3 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
---Type <return> to continue, or q <return> to quit---
#16 0x00007ffff41b4ec2 in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007ffff41c6993 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007ffff41ce9b2 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff41cf492 in g_signal_emit ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff57bc4a9 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#21 0x00007ffff567373b in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#22 0x00007ffff5675531 in gtk_main_do_event ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#23 0x00007ffff529a112 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#24 0x00007ffff3ef70c3 in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ffff3ef7410 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ffff3ef74d4 in g_main_context_iteration ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ffff44987c4 in g_application_run ()
   from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#28 0x00007ffff5bcc2da in granite_application_run ()
   from /usr/lib/libgranite.so.0
#29 0x0000000000419220 in _vala_main ()
---Type <return> to continue, or q <return> to quit---
#30 0x0000000000419285 in main ()
(gdb)