1. I built the latest 21.2 from CVS sources. 2. I fired up XEmacs (not -vanilla and I don't enable gutters.) 3. I brought up the about screen from the Help menu. 4. I brought up the Installation window from the Help menu. 5. I moved the mouse around between the windows and boom! Here's a backtrace: #0 0x40288d61 in __kill () from /lib/libc.so.6 #1 0x8084c09 in fatal_error_signal () #2 0x40288c98 in __restore () at ../sysdeps/unix/sysv/linux/i386/sigaction.c:127 #3 0x4028a1c0 in abort () at ../sysdeps/generic/abort.c:88 #4 0x8084b51 in assert_failed () #5 0x80f97dd in text_query_geometry () #6 0x80f178b in image_instance_layout () #7 0x80ef4fe in instantiate_image_instantiator () #8 0x80f38e0 in image_instantiate () #9 0x80879a8 in call_with_suspended_errors_1 () #10 0x8086900 in internal_catch () #11 0x8087c97 in call_with_suspended_errors () #12 0x815dd71 in specifier_instance_from_inst_list () #13 0x815e08e in specifier_instance () #14 0x80ce997 in update_face_cachel_data () #15 0x80cf235 in get_builtin_face_cache_index () #16 0x80d12dc in reset_face_cachels () #17 0x813c783 in redisplay_window () #18 0x813d431 in redisplay_frame () #19 0x813d726 in redisplay_device () #20 0x813d9a8 in redisplay_without_hooks () #21 0x81441fe in redisplay () #22 0x80b80bf in Fnext_event () #23 0x806a227 in Fcommand_loop_1 () #24 0x806a4cd in command_loop_1 () #25 0x8086b04 in condition_case_1 () #26 0x806a5f4 in command_loop_2 () #27 0x8086900 in internal_catch () #28 0x8069af7 in initial_command_loop () #29 0x8082dc1 in xemacs_21_2_b30_i686_pc_linux () #30 0x808363b in main () #31 0x402829ee in __libc_start_main (main=0x8083530 <main>, argc=1, argv=0xbffffbf4, init=0x804d378 <_init>, fini=0x81c0efc <_fini>, rtld_fini=0x4000a570 <_dl_fini>, stack_end=0xbffffbec) at ../sysdeps/generic/libc-start.c:90 And here's my 21.2 Installation file: uname -a: Linux zion.ne.mediaone.net 2.2.15pre9 #3 SMP Sun Feb 20 19:41:37 EST 2000 i686 unknown /usr/local/src/xemacs-21.2-2000-02-22/configure '--prefix=/usr/local/xemacs-21.2-2000-02-22' '--with-gcc' '--site-includes=/usr/local/include' '--site-libraries=/usr/local/lib' '--infopath=/usr/local/info' '--with-mule=no' '--compiler=/usr/local/egcs-snapshot/bin/gcc' '--cflags=-O3 -malign-double -pipe -march=pentiumpro -mcpu=pentiumpro -ffast-math -fno-exceptions' '--with-dialogs=no' '--with-widgets=no' '--package-path=/usr/local/xemacs-packages' XEmacs 21.2-b30 "Hygeia" configured for `i686-pc-linux'. Where should the build process find the source code? /usr/local/src/xemacs-21.2-2000-02-22 What installation prefix should install use? /usr/local/xemacs-21.2-2000-02-22 What operating system and machine description files should XEmacs use? `s/linux.h' and `m/intel386.h' What compiler should XEmacs be built with? /usr/local/egcs-snapshot/bin/gcc -O3 -malign-double -pipe -march=pentiumpro -mcpu=pentiumpro -ffast-math -fno-exceptions Should XEmacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should XEmacs use the relocating allocator for buffers? no What window system should XEmacs use? x11 Where do we find X Windows header files? /usr/X11R6/include Where do we find X Windows libraries? /usr/X11R6/lib Additional header files: /usr/local/include Additional libraries: /usr/local/lib Athena library to link: Xaw Athena header include path: X11/Xaw Compiling in support for XAUTH. Compiling in support for XPM images. Compiling in support for PNG image handling. Compiling in support for (builtin) GIF image handling. Compiling in support for JPEG image handling. Compiling in support for TIFF image handling. Compiling in support for X-Face message headers. Compiling in native sound support. Compiling in support for Berkeley DB. Compiling in support for ncurses. Compiling in support for GPM (General Purpose Mouse). Compiling in support for proper WM_COMMAND handling. Using Lucid menubars. Using Lucid scrollbars. Compiling in dynamic shared object module support. movemail will use "dot-locking" for locking mail spool files. Compiling in extra code for debugging. WARNING: --------------------------------------------------------- WARNING: Compiling in support for runtime error checking. WARNING: XEmacs will run noticeably more slowly as a result. WARNING: Error checking is on by default for XEmacs beta releases. WARNING: --------------------------------------------------------- I was unable to produce the crash with -vanilla. - vin