OSError with ctypes

[wearetherock]

I try call skype function with Skype4Py(need ctypes installed) but there are OSError like this.

http://lh3.ggpht.com/_x0NbS1FM7Io/SkmJYlhXTlI/AAAAAAAAHKM/XTAf0gjh13k/s800/CtypesOsError.jpg

and my script


import xbmcgui

import sys
sys.path.append('/dos/library/Skype4Py/Skype4Py-1.0.31.0')
sys.path.append('/dos/library/ctypes/ctypes-1.0.2')
#sys.path.append('/usr/lib/python2.4/site-packages')

import Skype4Py

class FriendWindow(xbmcgui.Window):
def __init__(self):
pass

def create(self):
self.list = xbmcgui.ControlList(50,200,200,200)
self.addControl(self.list)
self.setFocus(self.list)

skype = Skype4Py.Skype()
skype.Attach()

for user in skype.Friends:
print ' ' , user.FullName


'''
listitem = xbmcgui.ListItem('Casino Royale', '[PG-13]', 'blank-poster.tbn',
'poster.tbn', path='f:\\movies\\casino_royale.mov')
self.list.addItem(listitem)
'''


f = FriendWindow()
f.create()
f.doModal()



I don't known the meaning of OSError for this case
can does one help me.
thank