help! newbie problem with PyChecker

[Stephen Ferg]

I think I've installed PyChecker correctly on my Windows PC, but when
I run it on one of its test files (test1.py) -- or any other program,
for that matter -- I get the following error message.  Does anyone
know what I might be doing wrong?

Thanks in advance.
-- Steve (Stephen Ferg ... Steve at Ferg.org)

C:\Python22\Lib\site-packages\pychecker>python checker.py test1.py

Traceback (most recent call last):
  File "checker.py", line 675, in ?
    sys.exit(main(sys.argv))
  File "checker.py", line 626, in main
    if LOCAL_MAIN_VERSION != pychecker.MAIN_MODULE_VERSION :
AttributeError: 'module' object has no attribute 'MAIN_MODULE_VERSION'