I recently got a new computer and copied over my existing local install from my old one. Everything seemed to be working just fine until today when I went to edit a block. This is what I am greeted to when visiting /admin/structure/block: http://i47.tinypic.com/t9wrnm.png
All other admin pages seem to be working fine and it does not seem to matter which theme is active. I also made a clean install real quick and everything works fine there so it's something isolated to this install? Has anyone else come across this? I'd love to salvage this install if possible. Thanks.