I'm using Flash Builder and Flash Pro. I'm using Flash pro to create a swc for my ActionScript Project in Flash Builder. When I use ActionScript Linkage in the swc and give the class a unique name and have it exported to the default package I can instantiate it in my Flash Builder project. But if I try to attach or link the ActionScript Linkage class in my swc to a specific and existing class in my codebase, Flash Builder instantiates this class from codebase with out any of the art from the swc. So it appears that my Flash Builder ActionScript project is not linking the class in the swc with the class in the codebase.