OpenStack API 500 Error

HTTP/1.1 500 Internal Server Error
Content-Type: text/plain
Content-Length: 1416
Date: Wed, 13 Oct 2010 18:17:42 GMT
Connection: close

Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/eventlet/wsgi.py", line 336, in handle_one_response
    result = self.application(self.environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/webob/dec.py", line 159, in __call__
    return resp(environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/routes/middleware.py", line 131, in __call__
    response = self.app(environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/webob/dec.py", line 159, in __call__
    return resp(environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/webob/dec.py", line 159, in __call__
    return resp(environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/webob/dec.py", line 147, in __call__
    resp = self.call_func(req, *args, **self.kwargs)
  File "/usr/local/lib/python2.6/dist-packages/webob/dec.py", line 208, in call_func
    return self.func(req, *args, **kwargs)
  File "/root/novascript/nova/nova/api/openstack/__init__.py", line 66, in __call__
    return self.auth_driver.authenticate(req)
  File "/root/novascript/nova/nova/api/openstack/auth.py", line 49, in authenticate
    token, user = self._authorize_user(username, key)
  File "/root/novascript/nova/nova/api/openstack/auth.py", line 86, in _authorize_user
    if user and user['name'] == username:
TypeError: 'User' object is unsubscriptable