"vyemialyanchyk" wrote : asookazian, which is type of your Hibernate CC? it seems "Core". | open Edit Configuration dialog and change it to "JPA" - this should help. | | also I saw your persistence.xml doesn't contains "Managed Classes" - this is not a reason of HCC exception - just little hint. it's JPA. this issue has been resolved for the workshop demo app. there were no .class files available (they weren't built yet after revengr). I will attempt to resolve it for my app now. related thread: http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217116#... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217120#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...