Description of problem:
Occures randomly.

Version-Release number of selected component:
glade-3.15.0-1.fc19

Additional info:
reporter:       libreport-2.1.6
backtrace_rating: 4
cmdline:        /usr/bin/glade-previewer --listen --toplevel=window1
crash_function: gtk_notebook_buildable_add_child
executable:     /usr/bin/glade-previewer
kernel:         3.10.10-200.fc19.x86_64
runlevel:       N 5
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #4 gtk_notebook_buildable_add_child at gtknotebook.c:1236
 #5 _gtk_builder_add at gtkbuilder.c:772
 #6 parse_custom at gtkbuilderparser.c:807
 #7 start_element at gtkbuilderparser.c:902
 #8 emit_start_element at gmarkup.c:1029
 #9 g_markup_parse_context_parse at gmarkup.c:1366
 #10 _gtk_builder_parser_parse_buffer at gtkbuilderparser.c:1175
 #11 gtk_builder_add_from_string at gtkbuilder.c:1176
 #12 get_toplevel at glade-previewer.c:116
 #13 preview_widget at glade-previewer.c:182

Potential duplicate: bug 890571