Crash, 21.2 on FBSD 3.2

Hi, is anybody else experiencing the same behaviour? When I start a vanilla xemacs 21.2 (latest CVS sources), mule or no-mule makes no difference, I get an error message Wrong type argument: number-char-or-marker-p, nil Now, I type, let's say, f RET in the *scratch* buffer and move the cursor up, and off we go, right to Nirvana. Sorry, I haven't got the backtrace and stacktrace at hand (different file systems ...), but I can send them later, if necessary. Funny thing is, I only see this behaviour on FBSD, not on my Linux box which I am using now. The crucial change must have happened between last Saturday and last Wednesday. Any clues? TIA, norbert.