When I add -Djboss.service.binding.set=Ports01Bindings I get this error: 12:48:11,119 ERROR [AbstractKernelController] Error installing to Instantiated: name=SystemPropertyBinder#1 state=Described org.jboss.services.binding.NoSuchBindingException: No binding null found for ser vice jboss.messaging:service=Connector,transport=bisocket in set Ports01Bindings Is there something else I need to do? I've gotten JBoss 5 to run at the same time as JBoss 4 by changing all JBoss 5 port settings in bootstrap/bindings.xml to start with a 9, but your approach is cleaner. I also changed two port settings in deploy/jbossweb.sar/server.xml, but maybe that isn't necessary. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213511#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...