I am struggling with the ubuntu/debian version installed using the latest 6.1 server and 6.1 client. The Fleet management Module (Author Vertel) fire the following Errors:

1) Bazaar Package not Found ! But the bzr package is in the latest version.

2) cannot marshal None unless allow_none is enabled I found a lot of people asking this but no solution posted The best one seem to be a comment that allow should be False not None and Allow_none should be not true. But it makes no sense. Can someone solve that ?

Environment Information : 
System : Windows-post2008Server-6.1.7601-SP1
OS Name : nt
Operating System Release : post2008Server
Operating System Version : 6.1.7601
Operating System Architecture : 32bit
Operating System Locale : de_DE.cp1252
Python Version : 2.6.5
OpenERP-Client Version : 6.1.1
Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
  File "/opt/openerp/server/openerp/wsgi/core.py", line 80, in xmlrpc_return
    response = xmlrpclib.dumps((result,), methodresponse=1, allow_none=0, encoding=None)
  File "/usr/lib/python2.6/xmlrpclib.py", line 1132, in dumps
    data = m.dumps(params)
  File "/usr/lib/python2.6/xmlrpclib.py", line 677, in dumps
    dump(v, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 699, in __dump
    f(self, value, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 780, in dump_struct
    dump(v, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 699, in __dump
    f(self, value, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 780, in dump_struct
    dump(v, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 699, in __dump
    f(self, value, write)
  File "/usr/lib/python2.6/xmlrpclib.py", line 703, in dump_nil
    raise TypeError, "cannot marshal None unless allow_none is enabled"
TypeError: cannot marshal None unless allow_none is enabled