Crash on clicking Save button for customization

--text follows this line-- This bug report will be sent to the XEmacs Development Team, not to your local site managers!! Please write in English, because the XEmacs maintainers do not have translators to read other languages for them. In XEmacs 21.2 (beta26) "Millenium" [Lucid] (sparc-sun-solaris2.6) of Sat Jan 1 2000 on amdev01 configured using `configure --site-includes=/opt/local_dev/include --site-libraries=/opt/local_dev/lib --dynamic --prefix=/opt/local_dev/xemacs-21.2.26 --with-xpm --with-tooltalk --with-sparcworks --with-gcc=no --with-xface' Please describe exactly what actions triggered the bug and the precise symptoms of the bug: Brought up customize for Custmize/Emacs/Environment/Menu/Buffers Menu/Submenus for Groups P Changed value to Allow subgroups Clicked save button with middle button, instead of button1. Crash. Recent keystrokes: Not applicable - post mortem report Recent messages (most recent first): Not applicable - post mortem report Core dump: /home/persicom [1066] $ dbx /opt/local_dev/xemacs-21.2.26/bin/xemacs ./projects/perl/portia-4.0/perf/core dbx: warning: cannot find global initialization file: dbxrc Reading symbolic information for xemacs core file header read successfully Reading symbolic information for rtld /usr/lib/ld.so.1 dbx: program is not active Reading symbolic information for libXm.so.3 Reading symbolic information for libtiff.so Reading symbolic information for libz.so Reading symbolic information for libXpm.so.4.11 Reading symbolic information for libDtSvc.so.1 Reading symbolic information for libtt.so.2 Reading symbolic information for libXmu.so.4 Reading symbolic information for libXt.so.4 Reading symbolic information for libXext.so.0 Reading symbolic information for libX11.so.4 Reading symbolic information for libSM.so.6 Reading symbolic information for libICE.so.6 Reading symbolic information for libdl.so.1 Reading symbolic information for libkvm.so.1 Reading symbolic information for libkstat.so.1 Reading symbolic information for libsocket.so.1 Reading symbolic information for libnsl.so.1 Reading symbolic information for libelf.so.1 Reading symbolic information for libc.so.1 Reading symbolic information for libm.so.1 Reading symbolic information for libmp.so.2 Reading symbolic information for libc_psr.so.1 Reading symbolic information for nss_files.so.1 Reading symbolic information for nss_compat.so.1 Reading symbolic information for nss_nis.so.1 Reading symbolic information for straddr.so program terminated by signal SEGV (Segmentation Fault) (dbx 1) where =>[1] _kill(0x0, 0xb, 0x45781c, 0x0, 0xef0a2eb4, 0xcb2cc), at 0xef08800c [2] fatal_error_signal(0x6030a4, 0x42b168, 0x42ac00, 0x42ac00, 0x457804, 0x41dc00), at 0xcb2cc ---- called from signal handler with signal 11 (SIGSEGV) ------ [3] TopWindowsReceived(), at 0xef6d4f1c [4] HandleNone(0x6fe600, 0xef6d4d1c, 0xaf3200, 0x130, 0xe51d40, 0x0), at 0xef3c2f20 [5] HandleSelectionReplies(0xe51d00, 0xe51d40, 0x6c9800, 0xef3f016c, 0xefffef7c, 0x6fe600), at 0xef3c345c [6] XtDispatchEventToWidget(0x0, 0xefffef7c, 0xefffee2c, 0xefffee3c, 0x0, 0x2), at 0xef3ace98 [7] _XtDefaultDispatcher(0xefffef7c, 0x0, 0x1f, 0x6bf4f4, 0x0, 0xa2ca30), at 0xef3ad9b4 [8] XtDispatchEvent(0xefffef7c, 0x0, 0xef3ad7f4, 0xef3f016c, 0x0, 0x1), at 0xef3ade3c [9] XtAppProcessEvent(0x4b2c00, 0x0, 0x0, 0x1, 0xef3f016c, 0x0), at 0xef3bbc4c [10] emacs_Xt_event_pending_p(0x1, 0x42af30, 0x430e68, 0x406000, 0x457804, 0x40c144), at 0x2f839c [11] Fnext_event(0x428c00, 0x42af30, 0x457804, 0x406320, 0x0, 0x40b640), at 0x141654 [12] Fcommand_loop_1(0x424800, 0x0, 0x42ac00, 0x0, 0x414990, 0x40a7e8), at 0x9aef8 [13] condition_case_1(0x41dc00, 0x42b000, 0x428c00, 0x99b6c, 0x457804, 0x0), at 0xd96e0 [14] command_loop_2(0x42af30, 0x99d60, 0xeffff190, 0x0, 0x0, 0x0), at 0x99da8 [15] internal_catch(0x46b84c, 0x99d60, 0x457804, 0x0, 0x40b400, 0x406000), at 0xd838c [16] initial_command_loop(0x428c00, 0x659780, 0x40b640, 0x625c38, 0x0, 0x40c144), at 0x9a244 [17] xemacs_21_2_b26_sparc_sun_solaris2_6(0x4, 0x451c00, 0x457804, 0xeffff578, 0x608b94, 0xeffff69c), at 0xccddc [18] main(0x4, 0xeffff69c, 0xeffff6b0, 0x406000, 0x0, 0x0), at 0xcd774 (dbx 2)