Can you please check whether the Java 5 language level libraries (WebServices Annotations) have been compiled with Java 6? We are using IntelliJ 6.0 EAP and when we compile with the Java 5 compiler (javac) we get lots of errors related to EJB3 and WS annotations. Switching to Java 6 compiler or the Eclipse compiler (which supports Java 6 class formats and now shipped with IntelliJ 6.0) our compilations are error free. I hope this is an environment or IDE issue as it would be extremely embarrassing for a major application server vendor to have such a blooper in its builds even for release candidates. Kind regards, William Louth JXInsight Product Architect JInspired "Java EE tuning, testing, tracing, and monitoring with JXInsight" http://www.jinspired.com View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3970352#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...