Error during install from sources on Windows when using Python x64...

[Richard B.]

I run Windows XP x64 so thought I'd install the x64 version of Python
(ie. python-2.6.2.amd64.msi) and try to install Bazaar from sources.
Unfortunately, after running "python setup.py install", I got an
error at the point when building 'bzrlib._btree_serializer_c'
extension:

  File "c:\Python26\lib\distutils\msvc9compiler.py", line 274,
    in query_vcvarsall raise ValueError(str(list(result.keys())))
ValueError: [u'path']

I haven't developed in Python but, being a programmer, I had a look at
the source for msvc9compiler.py, and think the error was caused due to
it  not  being  able  to  find  vcvarsall.bat.  This file was actually
present,  but  being  Windows x64, the location was in a sub-folder of
"Program Files (x86)" rather than "Program Files".

To cut a long story short, I installed the 32-bit version of Python
and "python setup.py install" ran without problems. Is this a problem
with Python x64 or with some part of Bazaar ?

-- 
Best regards,
Richard B.