Interesting. I didn't know that demo existed. The demo is based on an older version of Remoting, probably 1.4. As of Remoting 2.0, it is necessary to call Client.connect() before calling Client.invoke(). I.e., | Client remotingClient = new Client(locator); | remotingClient.connect(); | remotingClient.invoke("Do something, null); | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4178975#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...