Python: 2.4a2, windows installer (MSI)
OS: WinXP Prog ENG

Warning is raised when running regrtest.py:

C:\Python23\lib\test\test_format.py:19: FutureWarning: %u/%o/%x/%X of negative int will return a signed string in Python 2.4 and up
  result = formatstr % args
Traceback (most recent call last):
  File "C:\Python24\Lib\test\regrtest.py", line 1130, in ?
    main()
  File "C:\Python24\Lib\test\regrtest.py", line 359, in main
    e = _ExpectedSkips()
  File "C:\Python24\Lib\test\regrtest.py", line 1063, in __init__
    from test import test_codecmaps_cn, test_codecmaps_jp
ImportError: cannot import name test_codecmaps_cn

Logged In: YES 
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This is fixed in 2.4 CVS, as the test has been converted to
look for the new signed strings, and future warning is gone.

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However, the output does suggest that the test execution is
picking up the old Python23 test files, instead of the
Python24 ones.

Are you sure you ran the correct version of the interpreter?
(Windows PATH problems can easily confuse this issue - *not*
putting Python on the path is a very good idea if you want
to run multiple installs)

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Closing as suggested by  ncoghlan.