Here's the way it is:
I can upload images fine.
I can create a header-pic.
It even allows me to crop it.
I cannot see thumbnails!
I cannot "view" images. (it shows the empty page with the name of the image, unless I change aspects to a maximum of 800x600). Then it shows.
I cannot use a picture as a background for my page (not even in a ratio of 800x600
Previews are non-functional.
I HAVE TRIED:
throwing away wordpress and reinstalling it.
Tried it without ANY plugins.
Tried it without changing themes.
Tried it with Firefox, Google Chrome, Safari.
I cannot figure out what this could be.
IT STARTED when flagallery 1.7 produced an error, telling me php-memory isn't sufficiend. So I changed image sizes. - no errors, but still the same problem. Flagallery didn't even show pictures anymore. All viewing was impossible. Only thumbnail-editing was possible.
Pleeeease help me! What do I have to do?