Sig 11 after turning on tabs

I turned on tabs, opened a new contact window (already
had some open), then tried to close it, and AYTTM crashed.

Here's what it said:
Ayttm version 0.4.6-17
GTK+ version 1.2.10
Features: pspell
Operating system: Linux 2.4.18-3 (i686)
C Library: GNU libc 2.2.5
Signal: 11
--
[New Thread 1024 (LWP 27136)]
0x420b4769 in wait4 () from /lib/i686/libc.so.6
#0 0x420b4769 in wait4 () from /lib/i686/libc.so.6
#1 0x4213030c in __DTOR_END__ () from /lib/i686/libc.so.6
#2 0x400d2ca3 in waitpid () from /lib/i686/libpthread.so.0
#3 0x0808494b in crash_handler (sig=11) at crash.c:584
#4 0x400d0f75 in pthread_sighandler () from
/lib/i686/libpthread.so.0
#5 <signal handler called>
#6 0x402dde65 in gtk_widget_destroy () from
/usr/lib/libgtk-1.2.so.0
#7 0x08064cec in remove_smiley_window (cw=0x82d7f60)
at chat_window.c:346
#8 0x08064f6c in close_tab_callback (button=0x0,
userdata=0x82d7f60)
at chat_window.c:399
#9 0x080659d5 in cw_close_win (close_button=0x83cec58,
userdata=0x81c4038)
at chat_window.c:733
#10 0x40276a9c in gtk_marshal_BOOL__POINTER () from
/usr/lib/libgtk-1.2.so.0
#11 0x402aa3e6 in gtk_handlers_run () from
/usr/lib/libgtk-1.2.so.0
#12 0x402a971d in gtk_signal_real_emit () from
/usr/lib/libgtk-1.2.so.0
#13 0x402a74d5 in gtk_signal_emit () from
/usr/lib/libgtk-1.2.so.0
#14 0x402e1b49 in gtk_widget_event () from
/usr/lib/libgtk-1.2.so.0
#15 0x40275845 in gtk_main_do_event () from
/usr/lib/libgtk-1.2.so.0
#16 0x40326d6f in gdk_event_dispatch () from
/usr/lib/libgdk-1.2.so.0
#17 0x40359773 in g_main_dispatch () from
/usr/lib/libglib-1.2.so.0
#18 0x40359d39 in g_main_iterate () from
/usr/lib/libglib-1.2.so.0
#19 0x40359eec in g_main_run () from
/usr/lib/libglib-1.2.so.0
#20 0x402752e3 in gtk_main () from /usr/lib/libgtk-1.2.so.0
#21 0x0805bd12 in main (argc=1, argv=0xbffffb84) at
main.c:472
#22 0x42017499 in __libc_start_main () from
/lib/i686/libc.so.6