Ravi,

The build process does not need to compile the VFP baseclasses. The build process does need to compile your classlibrary, which it can't because the classlibrary is open. The classlibrary is open because your currently running form is using one of its classes.

>I would presume so. Thats the one that I pick from ViewClasses/Standard icon on the VFP toolbar.
>
>And OK, if I were using an instance of MyBaseClasses on the form that was creating the executable, I am at the same time having an instance of the "Standard"/(base?) classes also on the same form. What I staill fail to understand is why MyBaseClasses did not work and why the Standard or base
>class work?