>I have found the problem and solution.
>
>File vfp9r.dll in app home dir was the cause of the problem.
>I don't know why, but I think it got corrupted during network transfer or compressing.
>Problem was that wasn't any error message, it made it harder to trace.
>I have copied it from VFP directory and all works now.
>
>Thank you all.

I am glad to hear that you solved your problem.