[Zope] PNG image import incorrect

[Li Dongfeng]

I'm using ZOPE 2.0.0b5, and tried to upload
a PNG image to a ZOPE folder. When I tried
to view it, the image cannot show properly.
A check of its property page in ZOPE discovered
that ZOPE erroneously calculatedd the width and
height of the image(with height of 1229472850).
The image was converted from a PostScript file
with ghostscript, and it displays properly in other
applications(eg. netscape).

If I manually modify its width and height in ZOPE's
property page, the image shows properly.

Anyone know what's the problem?

Li