when i deploy ejb3.0 on jboss4.2.0 ocurr this problem?? 11:18:27,171 ERROR [ServerThread] failed to process invocation. java.io.IOException: Can not read data for version 22. Supported versions: 1,2 at org.jboss.remoting.transport.socket.ServerThread.versionedRead(ServerThread.java:394) at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:446) at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:527) at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:261) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4186883#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...