I just installed eZ Platform and I get an error poping up at the bottom of the screen when adding an image to the content type Media -> Image. Without image the draft/publish works fine.
This error is also there on conent type Content -> Blog post when adding the image.
The content classes are original, I have made no changes to them.
I wondered if it could be a permission problem, but I did a (this is a test site) chmod -R a+w * on both the cache and var directories with no luck.