cores and gdb

had XEmacs-21.0-b38-pre2 dump core several times when I was accessing the "Recent Files->Non-permanent entries" menu. If I tried to use gdb on the core, I would get an error message stating that the core was not in executable format. Changing various permissions on the core-file didn't seem to do any good, and file reports that the core is stripped. I have XEmacs compiled with -g, so the executable shouldn't be stripped. Any suggestions? The crashes stopped when I manually edited ~/.recent-files.el and removed most of the non-permanent entries, several of which pointed to files which have been deleted. Larry