Jeff, I've been through the JBM 1.4.0 SP3 installation instructions. My jboss-remoting.jar is the patched version, 2.2.2 SP4. Also, on the client jboss-remoting is before jbossall-client.jar in the classpath. I might also add that I have a strictly server-side JMS use case that executes without errors using the same JBM deployment. Thanks. John View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4140585#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...