>We recently updated all of our VFP code from 5 to 6 and now we get several random "fatal error exception C0000005" messages blowing up VFP each day. The same code can run fine 100 times and then it gets this error.

There are some disussion of C5 errors at http://fox.wikis.com/wc.dll?wiki~C0000005ExError

>I loaded service pack three and it seemed to make no difference. It happens on Win95 and Win98 machines.

Have you distributed the patched runtime to all of the machines?