A friend had similar problems. Finally tracked down to running an EXE compiled with VFP6 SP3 on computers set up with VFP6 no SP. The library files were just different enough to cause non-repeatable crashes. This may well be the same in your case. I'd try reinstalling the workstation files from a fresh NetSetup production.

HTH
Barbara

>I've got an app deployed on a network that has been running for several months. My client bought a new
>Dell computer and we installed the app on the new machine. The user there is getting GPF's frequently
>when inputting payments. If another machine is used for payments, no GPF ever occurs. There are no
>other programs running when the GPF occurs. The Details button informs me that VFP500.DLL caused
>the problem. I have copied in a new DLL for that machine to no avail.
>
>Anyone out there have any clue as to what could be going on?? I don't even know where to begin
>to look . . . .
>
>TIA.
>John