I have an addin that works perfectly on several computers, except for one,
where it always crashes Excel on loading and must be disabled after
restarting Excel. Reactivating it from the help/about window causes Excel to
crash again at the next load.

The computer where it crashes is running Office 2003, with SP1. The others
are running Office XP, SP2. I can't figure out how to fix or even debug
this. Could it be a 2003, or 2003 SP1 specific issue? I've tried
uninstalling and reinstalling Office but the results were the same. The
plugin is essential...

Thanks!