>If I exclude vcx from a project, I want to know what other potential problems I need to anticipate in additional to make sure that VFP can find the vcx during runtime. For example, will it have any effect on coding which is going to programmatically create class or add object based on the excluded vcx?

Hi Peter,
have a look at NEWOBJECT() (and the like) help for the order VFP searches for a class. If a class is "build in" in an exe, you can not use a class with the same name from outside the exe. Also you have to check that your vcx is in scope (either searchpath or full qualified filename, again check help for the command you use to create the object).

So to me the biggest problem is how to tell the exe where the classlib is located.

HTH
Agnes