Okay, here's the deal: I was trying to edit some user roles and I installed Owen Winkler's Role Manager plugin. I had used it with previous WP version and I didn't realize that it wasn't compatible with the latest version of WP.
I installed the plugin, tried to change a role, and realized that the backend seemed broken. I proceeded to deactivate the plugin, but when I deactivated it, all my WP-related stylesheets (blog, admin area) disappeared and now I get a 404 error whenever I try to access the backend (or anything else on the server, for that matter), I get a 404.
I usually am very good about DB backups, but I really dropped the ball recently and my latest backup is from the end of May.
Does anybody know what I messed up and how I can fix it?
My URL is: http://the-madness.net