Failed to load application

[artoev95]

Every step was fine until I got to this line in the installation :
(env)$ twistd -n -y kippo.tac

Unhandled Error
Traceback (most recent call last):
File "/home/a/env/local/lib/python2.7/site-packages/twisted/application/app.py", line 642, in run
runApp(config)
File "/home/a/env/local/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 23, in runApp
_SomeApplicationRunner(config).run()
File "/home/a/env/local/lib/python2.7/site-packages/twisted/application/app.py", line 376, in run
self.application = self.createOrGetApplication()
File "/home/a/env/local/lib/python2.7/site-packages/twisted/application/app.py", line 441, in createOrGetApplication
application = getApplication(self.config, passphrase)
--- ---
File "/home/a/env/local/lib/python2.7/site-packages/twisted/application/app.py", line 452, in getApplication
application = service.loadApplication(filename, style, passphrase)
File "/home/a/env/local/lib/python2.7/site-packages/twisted/application/service.py", line 403, in loadApplication
application = sob.loadValueFromFile(filename, 'application', passphrase)
File "/home/a/env/local/lib/python2.7/site-packages/twisted/persisted/sob.py", line 210, in loadValueFromFile
exec fileObj in d, d
File "kippo.tac", line 32, in
factory.portal = portal.Portal(core.ssh.HoneyPotRealm())
File "/home/a/kippo/kippo/core/ssh.py", line 140, in init
self.env = core.honeypot.HoneyPotEnvironment()
File "/home/a/kippo/kippo/core/honeypot.py", line 257, in init
self.cfg.get('honeypot', 'filesystem_file'), 'rb'))
File "/usr/lib/python2.7/pickle.py", line 1384, in load
return Unpickler(file).load()
File "/usr/lib/python2.7/pickle.py", line 864, in load
dispatchkey
File "/usr/lib/python2.7/pickle.py", line 886, in load_eof
raise EOFError
exceptions.EOFError:

Failed to load application: