[Zope] External Method Error.

[Yee-Ba Andere]

I followed the External Method howto by brian to the tee. But i get back these 
trace back errors:

traceback (innermost last):
  File /home/whho/Zope/lib/python/ZPublisher/Publish.py, line 214, in 
publish_module
  File /home/whho/Zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /home/whho/Zope/lib/python/Zope/__init__.py, line 202, in 
zpublisher_exception_hook
  File /home/whho/Zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /home/whho/Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_addExternalMethod)
  File /home/whho/Zope/lib/python/ZPublisher/Publish.py, line 102, in 
call_object
    (Object: manage_addExternalMethod)
  File /home/whho/Zope/lib/python/Products/ExternalMethod/ExternalMethod.py, 
line 125, in manage_addExternalMethod
  File /home/whho/Zope/lib/python/Products/ExternalMethod/ExternalMethod.py, 
line 167, in __init__
    (Object: upload_external)
  File /home/whho/Zope/lib/python/Products/ExternalMethod/ExternalMethod.py, 
line 186, in manage_edit
    (Object: upload_external)
  File /home/whho/Zope/lib/python/Products/ExternalMethod/ExternalMethod.py, 
line 195, in getFunction
    (Object: upload_external)
  File /home/whho/Zope/lib/python/App/Extensions.py, line 205, in getObject
    (Info: ('/home/whho/Zope/Extensions/upload.py', 'upload'))
SyntaxError: (see above)

I can't understand it. The filename I entered (without .py) is correct and 
even i follow the Function name in my upload.py which is upload_external. I'm 
loss.

I'm using zope2-1-1 binary from zope.org and running under Mandrake 6.0. Help 
please!