>The error I posted occurs from the user exe file. A multiuser app that can run for a week and then out of the blue the error will appear. The only thing I have thought it might be is if two users hit the app at the same second. Coulld this be the cause of it?

I don't know if this could cause that error, but may be worth a look...

newer network adapters allow for power management and most seem to default to have it ON. This means that the NIC can 'go to sleep' if unused for a while. Who knows what might result if VFP suddenly needs something and it was sleeping at the time?!

good luck