did you try running with AV disabled?

Yes, turned AV off, no change. This problem with the .exe occurs on multiple computers too, not just mine.

which SP of VFP9? SP0, SP1 or SP2? Hopefully you haven't tried to install SP2 
over SP1, this is known to cause problems. To install SP2 apparently you have
to completely uninstall VFP9, then reinstall VFP9 SP0 (i.e. no service pack, 
the original RTM), then install SP2 on that (bypassing SP1)

Yes, I installed VFP9 and then SP2 fresh. Running VFP9SP2 09.00.0000.5815 - Good idea.

have you done an .EXE rebuild with the RECOMPILE ALL option? I'd hate to think 
you were running with some components' object code still compiled in VFP8

Yes, I always recompile all files.

there is a VFPClean.app that may be worth running

I didn't know such a thing existed. I ran it and got message: note -- the IntelliSense Manager will automatically check for valid Foxcode tables) The foxcode table (_FOXCODE ) was backed up and replace din the original location. Interesting :)

in a couple of cases I've encountered corruption in class libraries that 
could only be fixed by creating new classlibs and copying individual 
classes from the old to the new. However, these problems manifested 
themselves in both dev and production

I hope this isn't the case as that doesn't sound like a fun job.

I don't know if a corrupted project file could cause anything like this. 
It's easy to create a new one, though, if you'd like to try it out

Interesting, hopefully I don't have to do this.


Thanks so much for the suggestions, you have been very helpful.