customize-variable causes segmentation fault

I tried to use the "Help->Send bug report..." menu item to send this. It asked for a Subject and then said, "Search failed ^----------$". So that's a bug in addition to the one reported below. As I type this, my compose buffer has a line with 7 dashes following the header lines. The "Send bug report..." function is looking for 10 dashes, so no surprise that it failed. Dunno where to look to fix this. I assume that it was going to construct a standard bug report, probably including the XEmacs version I'm running, and perhaps the OS, so I'll do that manually here: XEmacs 21.5 beta5 "bok choi" Linux 7.2 XFree86 4.2.0 Anyway, the real bug is that when I execute customize-variable, XEmacs crashes with a segmentation fault. This is repeatable, and it doesn't seem to matter what variable I supply as an argument to customize-variable. If there is something I can do to provide more information, (strace, core dump, whatever) I'd be happy to do it. This didn't happen with XEmacs 21.4. -- Pete