Would the customer be able/willing to try a different video driver on one of the offending workstations? Possibly a generic MS-supplied one.

These sound like video related problems and VFP is known to have difficulties with some (I can't say which (don't know)) video drivers/cards.
good luck



>Hi!
>
>We have problems with our Application. One of our customers becomes sometimes on different Workstations c000005 Errors in different Forms. The c00005 error occurs allways in the Form Refresh() or show.
>It doesn't depend on the complexity of the Form.
>
>What can I do?
>
>Thanks for any suggestions