When I remove Serializable interface from the ClientCallbackHandler then I get the following error: | socket://localhost:6034 | Starting remoting server with locator uri of: InvokerLocator [socket://127.0.0.1:6035/] | java.rmi.MarshalException: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is: | java.io.NotSerializableException: org.vss.service.license.client.ClientCallbackHandler | at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:306) | at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:143) | at org.jboss.remoting.Client.invoke(Client.java:525) | at org.jboss.remoting.Client.invoke(Client.java:488) | at org.jboss.remoting.Client.addListener(Client.java:714) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3959301#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...