Traceback (most recent call last):
  File "/usr/bin/flumotion-worker", line 45, in <module>
    boot.boot(PROGRAM_PATH)
  File "/usr/lib/flumotion/python/flumotion/common/boot.py", line 142, in boot
    main = reflect.namedAny(path)
  File "/usr/lib/flumotion/python/flumotion/twisted/reflect.py", line 49, in namedAny
    topLevelPackage = __import__(trialname)
  File "/usr/lib/flumotion/python/flumotion/worker/main.py", line 33, in <module>
    from flumotion.worker import worker, config
  File "/usr/lib/flumotion/python/flumotion/worker/worker.py", line 40, in <module>
    from flumotion.common import errors, interfaces, log, bundleclient
  File "/usr/lib/flumotion/python/flumotion/common/interfaces.py", line 30, in <module>
    class IMedium(components.Interface):
AttributeError: 'module' object has no attribute 'Interface'