session-error-appengine_utilities

error in Ubuntu 13.10 32bit GAE 1.8.5

{error in win8-x64} http://pastebin.com/emvVj6Bt

ERROR    2013-10-22 16:11:14,309 cgi.py:121] Traceback (most recent call last):
  File "/home/adminuser/dev/apps/autofollowr-master/index.py", line 4, in <module>
    from main import *
  File "/home/adminuser/dev/apps/autofollowr-master/main.py", line 6, in <module>
    from common import *
  File "/home/adminuser/dev/apps/autofollowr-master/common.py", line 4, in <module>
    from appengine_utilities.sessions import Session
  File "/home/adminuser/dev/apps/autofollowr-master/appengine_utilities/sessions.py", line 247, in <module>
    class _AppEngineUtilities_SessionData(db.Model):
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 515, in __init__
    _initialize_properties(cls, name, bases, dct)
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 430, in _initialize_properties
    attr.__property_config__(model_class, attr_name)
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 3686, in __property_config__
    self.collection_name))
DuplicatePropertyError: Class _AppEngineUtilities_Session already has property _appengineutilities_sessiondata_set

INFO     2013-10-22 16:11:14,429 module.py:599] default: "GET / HTTP/1.1" 500 -
INFO     2013-10-22 16:11:17,978 module.py:599] default: "GET /favicon.ico HTTP/1.1" 404 154
ERROR    2013-10-22 16:11:18,455 cgi.py:121] Traceback (most recent call last):
  File "/home/adminuser/dev/apps/autofollowr-master/index.py", line 4, in <module>
    from main import *
  File "/home/adminuser/dev/apps/autofollowr-master/main.py", line 6, in <module>
    from common import *
  File "/home/adminuser/dev/apps/autofollowr-master/common.py", line 4, in <module>
    from appengine_utilities.sessions import Session
  File "/home/adminuser/dev/apps/autofollowr-master/appengine_utilities/sessions.py", line 247, in <module>
    class _AppEngineUtilities_SessionData(db.Model):
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 515, in __init__
    _initialize_properties(cls, name, bases, dct)
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 430, in _initialize_properties
    attr.__property_config__(model_class, attr_name)
  File "/home/adminuser/dev/apps/gae/google_appengine/google/appengine/ext/db/__init__.py", line 3686, in __property_config__
    self.collection_name))
DuplicatePropertyError: Class _AppEngineUtilities_Session already has property _appengineutilities_sessiondata_set

INFO     2013-10-22 16:11:18,514 module.py:599] default: "GET /favicon.ico HTTP/1.1" 500 -