Look in the project's list of classes. Is the library put back there when you rebuild the project? If so, then there is something somewhere calling a class in it.

>I have a VFP6 project that I let someone else help me on. Seems that my co-worker ran some builder that added a VCX to the project (APPHOOK.VCX), but never used any of it. I've removed all references to this VCX from my project (I think?) but I still get an "Unable to find Unkown C:\stuff\app.vcxhook" error, every time I open the project. If I Ignore, the project DOES NOT open . . . if I try to open the project again, it does so successfully.