User blog comment:Sannse/Important Updates on Wikia’s New Look/@comment-3032235-20100929142421/@comment-85.234.65.51-20100929143004

Exactly the same problem. I switched default skin to a monaco preset instead of "custom" and that fixed it for my custom monaco, though removes it for logged out users. Had to stick a notice on the front page of the wiki. Hopefully it'll be sorted out soon.