I’m having the same problem. I tried to upgrade the plug in and now I can’t acces the admin area.
Yes, same problem. I’ve deactivated all plugins with no positive result. I’ve also desabled gears and activated the default theme and nothing worked, I can’t get to upload images. When I use flash uploader I get a HTTP error message, when I use the other uploader I get something like a broken link and a blank space in the image rectangle of the gallery.