Maybe this is the issue described in http://support.microsoft.com/default.aspx?scid=kb;EN-US;839024

You don't indicate the VFP version, but the problem I reference is addressed in VFP9.

>OK - I'm stumped! My .exe application stops with a C0000005 error at the very start, before even the splash screen. It doesn't get off square one. THe error log file is empty. Any help appreciated.