RPC XML Plugin result with warnings

[Irioth@…]

When I try to resolve action arise warning and trac returns an error

2009-09-18 13:06:49,203 Trac[web_ui] ERROR: add_warning
2009-09-18 13:06:49,204 Trac[web_ui] ERROR: Traceback (most recent call last):
  File "/usr/local/lib/python2.6/site-packages/TracXMLRPC-1.0.6-py2.6.egg/tracrpc/web_ui.py", line 182, in process_xml_request
    result = XMLRPCSystem(self.env).get_method(method)(req, args)
  File "/usr/local/lib/python2.6/site-packages/TracXMLRPC-1.0.6-py2.6.egg/tracrpc/api.py", line 94, in __call__
    result = self.callable(req, *args)
  File "/usr/local/lib/python2.6/site-packages/TracXMLRPC-1.0.6-py2.6.egg/tracrpc/ticket.py", line 191, in update
    req.add_warning("Rpc ticket.update: %(warning)s",
  File "/usr/local/lib/python2.6/site-packages/Trac-0.11.5-py2.6.egg/trac/web/api.py", line 198, in __getattr__
    raise AttributeError(name)
AttributeError: add_warning