(gdb) bt
#0  0xb764f461 in g_value_set_string () from /usr/lib/libgobject-2.0.so.0
#1  0xb763a47a in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#2  0xb763d0ee in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#3  0x0806a14e in on_sequence_table_scroll_event (widget=0x8209e90, 
    event=0x8174f30, user_data=0x81e8118) at main-page-sequence.c:1495
#4  0xb7a2caa0 in _gtk_marshal_BOOLEAN__BOXED ()
   from /usr/lib/libgtk-x11-2.0.so.0
#5  0xb7628a0b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#6  0xb7638e83 in g_signal_chain_from_overridden ()
   from /usr/lib/libgobject-2.0.so.0
#7  0xb763a158 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#8  0xb763a529 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#9  0xb7b1e624 in gtk_widget_activate () from /usr/lib/libgtk-x11-2.0.so.0
#10 0xb7a2aecd in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#11 0xb7a2b343 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#12 0xb78bebfa in _gdk_events_queue () from /usr/lib/libgdk-x11-2.0.so.0
#13 0xb75b5e2c in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#14 0xb75b9176 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#15 0xb75b9537 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#16 0xb7a2a4e1 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#17 0x08056787 in bt_main_window_run (self=0x816d048) at main-window.c:298
#18 0x08053d9c in bt_edit_application_run_ui (self=0x80be280)
    at edit-application.c:91
#19 0x08054e88 in bt_edit_application_run (self=0x80be280)
    at edit-application.c:438
#20 0x08053288 in main (argc=135623168, argv=0x2) at bt-edit.c:112