>I have an exe on a hanful of users machines where the exe and data is local.
>
>I had a user encounter the error "Variable UPC not found" when launching a form. UPC is a table in the app, not a variable. I had him shut down the app, restart it and relaunch the form with the same results. He then chose to restart Windows95, start the app and launch the form and now all is fine.
>
>This has me totally baffled. Anyone ever encounter something like this?

Corruption in table and/or index causes this (besides other like faulty RAM chip, bad sectors...). I had it before :) and you're lucky just resetting makes them work again. But I suggest you tell them a backup. In my case I couldn't recover it on the table itself so did an export to ascii, create the table and indexes from scratch and append.
Cetin