ImageMagick isn't installed. The doc wiki says NetPBM is an alternative, and I think it's installed (or something similar, I'd have to ask), but I'm not sure how to set up Wakaba for it.

Also, any chance of an upload board for non-image files, a la up.php? 2chan's public one is pretty dull, don't feel like translating it, 4chan's isn't public, too lazy to learn php or perl, you get the idea.