[python-win32] 'NoneType' object is not callable

[apocalypznow]

I always get this error when calling a function on the automation 
server: 'NoneType' object is not callable
Then the python program stops executing.  In the code below, 
mfcserver.SendMessage1() gives the error, and the print "Finished" line 
never executes.

It looks as though the dispatch is happening dynamically.  The error 
happens even if gencache is not used.

Code:

from win32com.client import gencache
gencache.EnsureModule('{6CAC46EE-C71C-475C-B372-2E988DA78678x0x1x0}', 0, 
1, 0)
mfcserver = win32com.client.Dispatch("Testmfcserver.Application")
mfcserver.SendMessage1("Hello server.")
print "Finished"