Hi, again, here is more GDB info - I'm really not able to interpret the output :-) Please see my former posting for a lisp backtrace. (gdb) pobj instance $1 = (Lisp_Image_Instance *) 0x798000 $2 = {header = {lheader = {type = 44, mark = 0, c_readonly = 0, lisp_readonly = 0}, next = 0x6a3ba0, uid = 16869, free = 0}, device = 3845632, name = 3131396, parent = 6539136, type = IMAGE_TEXT, x_offset = 0, y_offset = 0, width = 18, height = 14, display_hash = 0, dirty = 0, size_changed = 0, text_changed = 0, layout_changed = 0, optimize_output = 0, u = {...}, data = 0x0} (gdb) xtype instance record type: image-instance (gdb) call debug_print (instance) #<image-instance (text) on #<x-device on ":0.0" 0x233f> "=>" 0x41e5> this object leads to a call to abort in redisplay-x.c at function x_output_display_block(): switch (XIMAGE_INSTANCE_TYPE (instance)) { . . . case IMAGE_TEXT: case IMAGE_POINTER: default: abort (); } Gunnar> Ulrich Kaage <kaage(a)int.uni-karlsruhe.de&gt; writes: Gunnar> try using the 'pobj' command in gdb and post the result to Gunnar> xemacs-beta. You need to use the .gdbinit file from the Gunnar> XEmacs distribution to get pobj. I think this is explained Gunnar> in the FAQ. Gunnar> thanks. Gunnar -- Dipl.-Ing. U.Kaage Tel. ++49/(0)721/608-6273 Institut fuer Nachrichtentechnik Fax. ++49/(0)721/608-6071 Universitaet Karlsruhe (TH) kaage(a)int.uni-karlsruhe.de 76128 Karlsruhe Home Page und PGP-Key: http://www-int.etec.uni-karlsruhe.de/~kaage/