Notable addition : when I remove @Entity annotation from CMP class which is the root cause of exception, this class is not "ClassNotFound" anymore. But another packaged class, still with @Entity annotation, takes this place in exception report. So, the problem is definitely related to entity beans and their persistence, not to absence of class file in my case. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055164#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...