Traceback (most recent call last):

 "/usr/bin/salt-minion", line 18, in <module>
main()

 "/usr/bin/salt-minion", line 15, in main
minion.start()

 "/usr/lib/pymodules/python2.6/salt/__init__.py", line 198, in start
minion = salt.minion.Minion(self.opts)

 "/usr/lib/pymodules/python2.6/salt/minion.py", line 128, in __init__
self.functions, self.returners = self.__load_modules()

 "/usr/lib/pymodules/python2.6/salt/minion.py", line 160, in __load_modules
functions = salt.loader.minion_mods(self.opts)

 "/usr/lib/pymodules/python2.6/salt/loader.py", line 48, in minion_mods
functions = load.apply_introspection(load.gen_functions())

 "/usr/lib/pymodules/python2.6/salt/loader.py", line 400, in gen_functions
virtual = mod.__virtual__()

 "/usr/lib/pymodules/python2.6/salt/modules/win_network.py", line 18, in __virtual__
if __grains__['os'] == 'Windows':KeyError: 'os'
Traceback (most recent call last):

 "e:\programs\python2.5.4\lib\site-packages\nose-1.1.2-py2.5.egg\nose\case.py", line 133, in run
self.runTest(result)

 "e:\programs\python2.5.4\lib\site-packages\nose-1.1.2-py2.5.egg\nose\case.py", line 151, in runTest
test(result)

 "e:\programs\python2.5.4\lib\unittest.py", line 281, in __call__
return self.run(*args, **kwds)

 "e:\programs\python2.5.4\lib\unittest.py", line 267, in run
result.addError(self, self._exc_info())

 "e:\programs\python2.5.4\lib\site-packages\nose-1.1.2-py2.5.egg\nose\proxy.py", line 135, in addError
self.result.addError(self.test, self._prepareErr(err))

 "e:\programs\python2.5.4\lib\site-packages\nose-1.1.2-py2.5.egg\nose\result.py", line 64, in addError
exc_info = self._exc_info_to_string(err)

 "e:\programs\python2.5.4\lib\site-packages\nose-1.1.2-py2.5.egg\nose\result.py", line 183, in _exc_info_to_string
if issubclass(err[0], SkipTest):TypeError: issubclass() arg 1 must be a class