Can you try with the trunk, i.e., check out ESB via anonsvn and try again with that code? Although some of the code your stack trace touches hasn't changed in a while, some of it has. Just looking at the trunk code: | 10:55:17,281 ERROR [STDERR] MyAction error invoke | 10:55:17,312 ERROR [STDERR] java.lang.NullPointerException | 10:55:17,312 ERROR [STDERR] at java.net.URI$Parser.parse(URI.java:3010) | 10:55:17,312 ERROR [STDERR] at java.net.URI.(URI.java:578) | 10:55:17,312 ERROR [STDERR] at org.jboss.internal.soa.esb.addressing.helpers.CallHelper.fromXML(CallHelper.java:150) | indicates that the RelatesTo component of the message header is invalid (null). I've updated the code so we trap that (we should have). So although this won't fix your problem, it'll at least get handled more gracefully. If you can try with the latest trunk and this still problem still happens, then let us know. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4053371#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...