>I've seen something similiar. It occurred for me when I had an app that had an image and a container added to _screen, so I could have a nice background and buttons in the main VFP window. When I removed the items explicitly instead of waiting for CLEAR ALL to do it it solved the problem.

I use only top-levels, but it could be something similar, where I maybe don't clean up something I should. But since this never occurred previously, it had me scratching my head...And the oddest thing is that it's usually when I open vfp6 that I get the crash, not while in the session, so something bad is residing in memory that vfp6 itself clashes with...

In theory, I guess there should be no reason to have a CLEAR ALL in your application, though most of us use it, I think...but it'll have to go if it's going to cause problems.

Anyway, I think I'll visit David F's site and try out that dangling reference software I've seen mentioned...