I'll just let you know what worked for me. The C5 errors go so bad I
couldn't even run the code editor or debugger. I searched for all
foxuser.* files on my hard drive and deleted them all (there were about 70 from all various releases). Knock on wood, but I haven't had a C5 error since. Of course your results may vary ;)

It sure does seem that VFP6 is C5 happy, doesn't it? That seems strange to me since all previous releases have been so tight when it comes to this error..
At least with fox bugs we can work around them..

HTH,
Ed