Chris, Dennis, James, and Mark:
SUCCESS! Thanks for your suggestions. It was the registry. Kudos to
Dennis. The data strings for a lot of different "command" keys in the
registry were missing the %* (percent star) characters. Thanks Chris for
the explanation on why the %* string is needed.
Here is a sample key:
S1-5-21-1560217580-722697556-320042093-1000-Classes
py_auto_file
shell
open
command
The corrected data for the key looks like this:
"C:\Python34\python.exe" %1 %*
I used the 'find' tool in regedit to search for python in the registry.
There were many hits on the word python but only a handful had data fields
similar to the one above. Every instance was missing the %* string. I
modified them all. My script didn't start working until after I'd modified
the very last one. Happily, my computer still boots after mucking around in
the registry.
I haven't yet investigated the launcher suggested by Chris and Mark. That
may well be the proper solution. At the moment it looks like the Python
installer didn't create these registry entries properly in Windows 7.
Thanks again
Ken Stewart
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