Hi Michael,
In your original post you said ...
"If I try and build the application, recompiling all files, I get the following error: "The library base.vcx cannot be compiled because it is in use"
I took this to understand that you cannot do a full recompile of your project into an exe. If this is correct then you need to release the class library from the
VFP command window in order to allow VFP to re-compile it into your project/exe.
If I have misunderstood this and you are in fact able to do a full recompile but still cannot run the exe then I think there is an environmental problem perhaps like what Thomas has suggested.
Can you do a full re-compile without error?
In the End, we will remember not the words of our enemies, but the silence of our friends - Martin Luther King, Jr.