(glabels:32116): GLib-GObject-WARNING **: can't peek value table for type `<invalid>' which is not currently referenced

Program received signal SIGSEGV, Segmentation fault.
0x005c22cc in gtk_tree_model_get_valist () from /usr/lib/libgtk-x11-2.0.so.0
(gdb) backtrace full
#0  0x005c22cc in gtk_tree_model_get_valist ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#1  0x005c250f in gtk_tree_model_get () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#2  0x080ae0c4 in gl_wdgt_media_select_get_name (media_select=0x880e960)
    at wdgt-media-select.c:515
        page_num = <value optimised out>
        selection = 0x77fff4
        iter = {stamp = 0, user_data = 0x0, user_data2 = 0x0, user_data3 = 0x0}
        model = 0x88d9788
        name = <value optimised out>
        __FUNCTION__ = "gl_wdgt_media_select_get_name"
        __PRETTY_FUNCTION__ = "gl_wdgt_media_select_get_name"
#3  0x0806cfe6 in template_changed_cb (select=0x880e960, data=0x88c7808)
    at new-label-dialog.c:206
        name = <value optimised out>
        __FUNCTION__ = "template_changed_cb"
#4  0x009b8b4c in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#5  0x009aa182 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#6  0x009c2105 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#7  0x009c377c in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#8  0x009c3ee2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#9  0x080af4b4 in selection_changed_cb (selection=0x88dcba0, 
    user_data=0x880e960) at wdgt-media-select.c:446
        __FUNCTION__ = "selection_changed_cb"
#10 0x009b8b4c in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#11 0x009aa182 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#12 0x009c2105 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#13 0x009c377c in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#14 0x009c3ee2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#15 0x005cd7e4 in gtk_tree_selection_unselect_all ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#16 0x005e6f0f in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#17 0x005e73a6 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#18 0x005eb7cd in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#19 0x004c17e8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#20 0x009a87f7 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#21 0x009aa0b0 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#22 0x009c1d56 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#23 0x009c35fb in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#24 0x009c3ee2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#25 0x00608af6 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#26 0x0061bbaf in gtk_window_propagate_key_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#27 0x00621504 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#28 0x004c17e8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#29 0x009a87f7 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#30 0x009aa182 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#31 0x009c1d56 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#32 0x009c35fb in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#33 0x009c3ee2 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#34 0x00608af6 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#35 0x004b8ce3 in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#36 0x004ba0af in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#37 0x007def0a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#38 0x00a1c1b5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#39 0x00a1ffc8 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#40 0x00a20507 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#41 0x004ba699 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#42 0x0805ff79 in main (argc=1, argv=0xbffff3e4) at glabels.c:167
        remaining_args = 0x0
        option_entries = {{long_name = 0x80e53a5 "", short_name = 0 '\000', 
            flags = 0, arg = G_OPTION_ARG_FILENAME_ARRAY, 
            arg_data = 0xbffff31c, description = 0x0, 
            arg_description = 0x80c3d48 "[FILE...]"}, {long_name = 0x0, 
            short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, 
            arg_data = 0x0, description = 0x0, arg_description = 0x0}}
        option_context = <value optimised out>
        program = 0x80f3848
        client = <value optimised out>
        file_list = 0x0
        p = 0xbffff56d
        win = <value optimised out>