>>It seems to be all. Up until last week we didn't have any clients using Workstation to access our application then we got one. When we received the error report, we bought a copy, installed it on an older PC we had laying around and reproduced the error on the fresh install.
>
>So you had the same situation on more than one NT Workstation 4.0.
>
>The you have the service pack 1?
>

Actually, we've loaded the new SP2 which has only been out for a couple of days.

>There might also be a problem with the Visual FoxPro installation over a NT 4.0.

Except this is a compiled FPW26a application and the same files (EXE, ESL and others were copied directly off the server and rechecked so it's extremely unlikely that we're talking a corrupted application file.