For reference, the code that's NPEing is this: | 941 protected void setupMessageAcknowledgement(Subscription sub, | MessageReference messageRef) throws JMSException | 942 { | 943 SpyMessage message = messageRef.getMessage(); | 944 AcknowledgementRequest ack = new AcknowledgementRequest(); | 945 ack.destination = message.getJMSDestination(); | message is null. Unfortunately, I don't see any way you might be able to diagnose this yourself. If you could add more logging to PersistenceManager to see if this is happening, that'd be great. I think filing a JIRA issue would be good as well. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980506#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...