Traceback (most recent call last):
  File "multiminer.py", line 114, in
  File "multiminer.py", line 109, in main
  File "ClusterServer.pyc", line 102, in start
  File "WebServer.pyc", line 39, in start
  File "twisted\internet\posixbase.pyc", line 419, in listenTCP
  File "twisted\internet\tcp.pyc", line 857, in startListening
twisted.internet.error.CannotListenError: Couldn't listen on any:80: [Errno 1004
8] Only one usage of each socket address (protocol/network address/port) is norm
ally permitted.

Hi this is what I got from the error message after editting the script to the one you mentioned