My first question is... If the update has completely broken your site, how can you install, activate and configure that plugin after you've downloaded it?
@Dion, isn't what you've said there to do with the plugin having issues with WP 3.5, not with the issues being in WP 3.5?
Yes, Thats exactly what I'm saying, The post here was misleading, and it doesn't fix any problems in WP 3.5, mearly they've updated the plugin to fix the incompatibilities. I'm only posting to say that for others, who come across this thread, installing this plugin will not magically fix anything for them, unless they're already running it.