AutoItLibrary in 64 bit Windows 7 with 64 bit python and win32com

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Trying to import AutoItLibrary shows stack trace:
 Initializing test library 'AutoItLibrary'
 with no arguments failed: com_error: (-2147221164, 'Class not registered', None, None)

What steps will reproduce the problem?
1. Win 7 64 bit, Python 2.7 64 bit, pywin32 64 bit for 2.7 python
2. Try executing the tests in AutoItLibrary

What is the expected output? What do you see instead?
I expect it to work or give me an error that a "normal" user could use to solve 
the issue.

So what works:
Install 32 bit python and 32 bit version of pywin32
-- but the error message doesn't really tell this so I suggest that 
AutoItLibrary at least checks that it is running in a platform that it supports 
and instructs the user to do what is needed to get things working.

Original issue reported on code.google.com by mikko.ko...@gmail.com on 28 Jan 2014 at 9:34