PIL and Windows file formats?

[Erik Max Francis]

I installed Python 2.0 and PIL for Python 2.0 on my machine and am
trying to manipulate images.  I try to open a (valid) PNG image (with a
standard .png file extension) with PIL.Image.open and get a "cannot
identify image type" error.  I then debug through PIL.Image.py only to
discover, much to my surprise, the only formats it seems to know about
(in PIL.Image.ID) are GIF, JPEG, and TIFF.

Any idea what in the world is going on here?

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