Look at D:/jboss-4.0.4/server/Node2/deploy/tc5-cluster.sar/META-INF/jboss-service.xml. You've probably got a comment enclosed inside another comment, which is illegal. Likely cause of this is in the ClusterConfig section. If you commented out the UDP config, there is a comment inside the config -- remove the inside comment. If it's not the ClusterConfig element, it's something similar. The exception says it all; you can't have '--' anywhere inside an XML comment. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3983112#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...