>Yes. I am running the same exe in my PC but runs ok even without
>activating the VFP development itself.
>
If its not only your computer working, but also others with VFP / Develment source installed. Then I am suspecting, perhaps Development source being locally available or a config.fpw that is taking effect.

What Operating system do the OK machines have? What OS on the machines that crash with C5?

Cris