Thanks for making this thread, I seem to be getting problems with it though.
First off, it worked like a charm untill I was told steam was busy, and after that, it keeps telling me this.
I can't start downloading the game now either, but it says I've installed it if I run the disk, even though I haven't installed it.
I can't delete any local content either.
Know anything that might help?
EDIT: Nevermind, I got it to work, cheers for the thread!
<message edited by Kurodenkou on Friday, November 11, 2011 8:04 AM>