[vbox-dev] Python vboxapi: 'Class not registered'

[Luiz Carlos Geron]

I'm using windows 7 64 bits and I ran the vboxapisetup.py file (I 
installed python after virtualbox so I suppose i needed to do this), but 
I get this error:

     C:\>python
     ActivePython 2.6.5.12 (ActiveState Software Inc.) based on
     Python 2.6.5 (r265:79063, Mar 20 2010, 14:22:52) [MSC v.1500 32 bit 
(Intel)] on
     win32
     Type "help", "copyright", "credits" or "license" for more information.
     >>> from vboxapi import VirtualBoxManager
     >>> vboxManager = VirtualBoxManager(None, None)
     Traceback (most recent call last):
       File "<stdin>", line 1, in <module>
       File "C:\Python26\lib\site-packages\vboxapi\__init__.py", line 
470, in __init_
     _
         exec "self.platform = Platform"+style+"(platparams)"
       File "<string>", line 1, in <module>
       File "C:\Python26\lib\site-packages\vboxapi\__init__.py", line 
218, in __init_
     _
         win32com.client.gencache.EnsureDispatch('VirtualBox.Session')
       File "C:\Python26\lib\site-packages\win32com\client\gencache.py", 
line 529, in
     EnsureDispatch
         disp = win32com.client.Dispatch(prog_id)
       File "C:\Python26\lib\site-packages\win32com\client\__init__.py", 
line 95, in
     Dispatch
         dispatch, userName = 
dynamic._GetGoodDispatchAndUserName(dispatch,userName,c
     lsctx)
       File "C:\Python26\lib\site-packages\win32com\client\dynamic.py", 
line 104, in
     _GetGoodDispatchAndUserName
         return (_GetGoodDispatch(IDispatch, clsctx), userName)
       File "C:\Python26\lib\site-packages\win32com\client\dynamic.py", 
line 84, in _
     GetGoodDispatch
         IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, 
pythoncom.II
     D_IDispatch)
     pywintypes.com_error: (-2147221164, 'Class not registered', None, None)
     >>>


I've tried both as a regular user and as Administrator, with the same 
error. What does this mean and what can I do to at least find the cause?