I tried using byvalue=true to force a remote invoker to be used, but I'm still getting the same exception. The only difference this time is that remoting is complaining that it can't instantiate org.jboss.remoting.transport.socket.SocketClientInvoker because it doesn't have a no-arg constructor. :) | 14:44:40,578 ERROR [ServerThread] failed | org.jboss.serial.exception.SerializationException: Could not create instance of org.jboss.remoting.transport.socket.SocketClientInvoker - org.jboss.remoting.transport.socket.SocketClientInvoker | at org.jboss.serial.classmetamodel.ClassMetaData.newInstance(ClassMetaData.java:327) | at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:239) | at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411) | at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81) | at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectInput.readObject(DataContainer.java:639) | at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353) | .... (many more snipped for clarity) | Caused by: java.lang.InstantiationException: org.jboss.remoting.transport.socket.SocketClientInvoker | at java.lang.Class.newInstance0(Class.java:335) | at java.lang.Class.newInstance(Class.java:303) | at org.jboss.serial.classmetamodel.ClassMetaData.newInstance(ClassMetaData.java:319) | ... 44 more | I'll try to make the server and client both use remoting 2.0. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3964677#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...