>>Actually, we've loaded the new SP2 which has only been out for a couple of days.
>
>This is what I like about MS is those service pack releases which really demonstrates how buggy a software can be. :)
>
>>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.
>
>Ok, I didn't realize at first you were using 2.6. Is it possible MS don't support 2.6 under NT 4.0?

That would be an interesting question which I believe I would have a great deal of trouble trying to get an honest answer if they've specifically put something in NTWS 4.0 to prevent the app from running. However, the app runs fine in NT Server 4.0 so I doubt that's the problem.