[Zope] can not put Photo with webdav

[C.Moldenhauer, redCOR AG]

Hi there,

I am using the Photo product.
The Potos have names like Picture.jpg (so they are recognised correctly)
Now I like to edit some of the photos trough webdav using DreamWeaver and
Fireworks.

When I try to chekout a Photo I get an error saying that the operation was
denied by the server.

With non Photo-images this works fine.

Is there something I can do? Or is it just not possible to update Photos
trough WebDAV

Robert