oVFP = CREATEOBJECT("VisualFoxpro.Application") >oVFP.DoCmd("BUILD EXE X:\MyMainDevDir\MyApplication\MyEXE.exe FROM X:\MyMainDevDir\MyApplication\MyProject") >oVFP = NullWell, after having worked with it for a while, today, twice in a row, I got the same thing. The error is different as this is a COM object. So, the error is: