twisted.internet.error.ReactorNotRunning: Can't stop reactor that isn't running.

[Chris Bainbridge]

2012-02-16 12:30:50,094 - twisted - ERROR - Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/gtk2reactor.py", line 270, in run
    self.__run()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/gtk2reactor.py", line 141, in wrapper
    return real_cb(real_s, condition)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/gtk2reactor.py", line 306, in callback
    self.simulate() # fire Twisted timers
  File "/usr/lib/python2.7/dist-packages/twisted/internet/gtk2reactor.py", line 316, in simulate
    self.runUntilCurrent()
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 766, in runUntilCurrent
    f(*a, **kw)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/main.py", line 267, in quit
    reactor.stop()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 571, in stop
    "Can't stop reactor that isn't running.")
twisted.internet.error.ReactorNotRunning: Can't stop reactor that isn't running.

Full log at https://launchpadlibrarian.net/93074213/syncdaemon-exceptions.log.2012-02-16_12-30-50
ubuntuone-client 2.0.0-0ubuntu2.3