Comment 2 for bug 877338

StacktraceTop:
 gtk_box_set_child_property (container=0x9db6cc, child=0x10e5ff4, property_id=193811072, value=0x10e5ff4, pspec=0xb8d5280) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkbox.c:772
 g_main_context_default () at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:662
 g_simple_async_result_complete (simple=0xb8d5280) at /build/buildd/glib2.0-2.30.0/./gio/gsimpleasyncresult.c:749
 set_margins_from_printer (dialog=<optimized out>, printer=<optimized out>) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkcustompaperunixdialog.c:804
 complete_in_idle_cb (data=0xa0d9280) at /build/buildd/glib2.0-2.30.0/./gio/gsimpleasyncresult.c:761