>Are the VFP IDE and the resulting .exe running on the same machine?

Oh, yes. The same machine, the same user... (only me, admin) In fact I had forgotten I programed a "MD C:\TEMPSYS" instruction till I tested a future installation. When I found an access denied error I had to research for the cause. Then I tried creating a file in Windows and I was surprised when worked. Then I saw the exe file failed and I didn't understand. I know in W XP no problem but I want to do something which work in any OS.