# /opt/graphite/bin/carbon-cache.py --debug start
Starting carbon-cache (instance None)
Traceback (most recent call last):
  File "/opt/graphite/bin/carbon-cache.py", line 30, in <module>
    run_twistd_plugin(__file__)
  File "/opt/graphite/lib/carbon/util.py", line 74, in run_twistd_plugin
    runApp(config)
  File "/usr/lib/python2.6/dist-packages/twisted/scripts/twistd.py", line 23, in runApp
    _SomeApplicationRunner(config).run()
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 411, in run
    self.application = self.createOrGetApplication()
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 489, in createOrGetApplication
    ser = plg.makeService(self.config.subOptions)
  File "/opt/graphite/lib/twisted/plugins/carbon_cache_plugin.py", line 21, in makeService
    return service.createCacheService(options)
  File "/opt/graphite/lib/carbon/service.py", line 104, in createCacheService
    factory = ServerFactory()
NameError: global name 'ServerFactory' is not defined