Hi Dan Yes, I'm seeing it here also. In this case the WireFormatJMSTextReferenceInterceptor is being added to the wire twice for some reason and that's causing the problem. Don't know why yet but can you raise a JIRA [1] for the problem and I'll look at making a fix for it.
Thanks Simon [1] https://issues.apache.org/jira/browse/TUSCANY
