Program received signal SIGSEGV, Segmentation fault.
0xb749a541 in dependent_unlink (dep=0xa0b5060) at dependent.c:1536
1536		g_return_if_fail (IS_SHEET (dep->sheet));
(gdb) bt
#0  0xb749a541 in dependent_unlink (dep=0xa0b5060) at dependent.c:1536
#1  0xb7477f48 in gnm_cell_cleanout (cell=0xa0b5060) at cell.c:57
#2  0xb7478638 in gnm_cell_set_value (cell=0xa0b5060, v=0xb7663178) at cell.c:159
#3  0xb750f1ba in sheet_cell_set_value (cell=0xa0b5060, v=0xb7663178) at sheet.c:3062
#4  0xb7484c03 in cmd_hyperlink_undo (cmd=0xa11f350, wbc=0x99150c8) at commands.c:7229
#5  0xb748bc88 in command_undo (wbc=0x99150c8) at commands.c:396
#6  0xb756de30 in cb_undo_activated (a=0x98e2f30, wbc=0x99150c8) at wbc-gtk.c:3364
#7  0xb6d061ec in g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#8  0xb6d04484 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#9  0xb6d160d9 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#10 0xb6d1e2dc in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#11 0xb6d1e453 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#12 0xb6e429f6 in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#13 0xb6e431d4 in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#14 0xb6d04484 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#15 0xb6d160d9 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#16 0xb6d1dff5 in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#17 0xb6d1e453 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#18 0xb6e3c6ae in gtk_accel_group_activate () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#19 0xb6e3e069 in gtk_accel_groups_activate () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#20 0xb70b012a in gtk_window_activate_key () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#21 0xb70b018e in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#22 0xb6f461e2 in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#23 0xb6d032fd in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#24 0xb6d04484 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#25 0xb6d1670d in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#26 0xb6d1dff5 in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#27 0xb6d1e453 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#28 0xb709036b in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#29 0xb6f43e3b in ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#30 0xb6f45e50 in gtk_main_do_event () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#31 0xb6d6263c in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#32 0xb6d8b828 in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#33 0xb6c44d86 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#34 0xb6c45125 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#35 0xb6c4556b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#36 0xb6f44fe5 in gtk_main () from /usr/lib/i386-linux-gnu/libgtk-3.so.0
#37 0x0804a97d in main (argc=1, argv=0xbfa2c394) at main-application.c:384

