Robotics Service Bus

I got an unexpected traceback on console when using a simple python RSB tool:

Exception in thread Thread-13:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/vol/csra/releases/trusty/lsp-csra-nightly/lib/python2.7/site-packages/rsb_python-0.12.0-py2.7.egg/rsb/util.py", line 326, in __worker
    self.__delFunc(receiver.receiver, message)
  File "/vol/csra/releases/trusty/lsp-csra-nightly/lib/python2.7/site-packages/rsb_python-0.12.0-py2.7.egg/rsb/eventprocessing.py", line 135, in __deliver
    action(event)
  File "/vol/csra/releases/trusty/lsp-csra-nightly/lib/python2.7/site-packages/rsb_python-0.12.0-py2.7.egg/rsb/patterns/__init__.py", line 326, in _handleRequest
    self.informer.publishEvent(reply)
  File "/vol/csra/releases/trusty/lsp-csra-nightly/lib/python2.7/site-packages/rsb_python-0.12.0-py2.7.egg/rsb/__init__.py", line 1425, in publishEvent
    % (event.scope, event, self.scope))
ValueError: Scope Scope[/__rsb/introspection/hosts/74938b09ed902fb7ea2dcd25556c0708/25912/echo/] of event Event[id = EventId(UUID('0d8b3a49-4fca-41d3-b7f7-91f871b546f2'), 158590), scope = 'Scope[/__rsb/introspection/hosts/74938b09ed902fb7ea2dcd25556c0708/25912/echo/]', data = 'None', type = '<type 'NoneType'>', method = 'REPLY', metaData = MetaData[create = 1433321961.33, send = 1433321961.33, receive = 1433321961.34, deliver = 1433321961.34, userTimes = {'request.send': 1433321961.332422, 'request.receive': 1433321961.342748}, userInfos = {}], causes = [EventId(UUID('0d8b3a49-4fca-41d3-b7f7-91f871b546f2'), 158590)]] is not a sub-scope of this informer's scope Scope[/__rsb/introspection/hosts/74938b09ed902fb7ea2dcd25556c0708/26077/echo/].

I cannot reproduce this exception as it only occurred once. I hope you can use this information...