All -- https://bugs.launchpad.net/congress/+bug/1620868 I stepped through the code with the pdb. I can't find anything wrong in the CongressException code. The traceback is being added by oslo_messaging/rpc/server.py in _process_incoming This call that is throwing an exception: res = self.dispatcher.dispatch(message) but I haven't determined why. https://github.com/openstack/oslo.messaging/blob/master/oslo_messaging/rpc/server.py#L134 https://github.com/openstack/oslo.messaging/blob/master/oslo_messaging/rpc/server.py#L142 console output here: http://paste.openstack.org/show/569334/ I can't figure out why oslo.messaging is throwing an exception, I assume I should go into the API and CLI cod and prevent the traceback from being displayed. Thoughts? Suggestions? Epiphanies? aimee