Probably the easiest compromise is just log a warning, e.g. WARN Not apply aspect B to com.acme.Blah because b.BInterceptor cannot be loaded from classloader A.jar But some might think that is serious problem if is B is really the security aspect and b.BInterceptor is really the Authentication interceptor. :-) i.e. "Blah" would not have the intended security aspect. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4220324#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...