User blog comment:Sannse/Important Updates on Wikia’s New Look/@comment-227331-20100929023755/@comment-3100721-20100929193306

''Warning: There is no skin "wikia". Remember that custom .css and .js pages use a lowercase title, e.g. User:Foo/monaco.css as opposed to User:Foo/Monaco.css.''

So Special:MyPage/oasis.css stopped getting called about seven-eight hours ago and yet I'm told by the database that it doesn't exist?

Also, I would have sworn it was MediaWiki:Wikia.css unless that changed overnight too.