Traceback (most recent call last):
  File "/usr/bin/update-manager", line 90, in <module>
    app = UpdateManager(data_dir)
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 304, in __init__
    self.setupDbus()
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 450, in setupDbus
    iface.bringToFront()
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 25, in __call__
    ret = self._proxy_method (*args, **keywords)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 102, in __call__
    reply_message = self._connection.send_with_reply_and_block(message, timeout)
  File "dbus_bindings.pyx", line 455, in dbus_bindings.Connection.send_with_reply_and_block
TypeError: exceptions must be strings, classes, or instances, not type