I just installed Jboss4.0.5 with no error. When I deployed my application ejb, it failed. The application ejb runs well on my previous server and they are EJB2.0. I compiled it with the late javeEE lib and unchange the ejb-jar.xml. They are all session beans. When I depolyed them, Jboss gave me the following error: 14:52:04,026 WARN [verifier] EJB spec violation: Bean : SYS/User Method : public abstract MutableUser addMobileTagUser(MutableTagUser, int, boolean) throws CodeException, RemoteException Section: 7.10.5 Warning: The methods defined in the remote interface must have a matching method in the bean's class with the same name and same number and types of arguments. 14:52:04,208 ERROR [MainDeployer] Could not create deployment: file:/home/oyang/jboss-4.0.5.GA/server/default/deploy/ejb.jar org.jboss.deployment.DeploymentException: Verification of Enterprise Beans failed, see above for error messages. at org.jboss.ejb.EJBDeployer.create(EJBDeployer.java:610) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) ............ Please help. Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3992951#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...