The Serial Key seems to have stopped working...
http://prntscr.com/1j3e6i
EDIT: Fixed. I used tsumiki01124's crack and replaced it with the original exe. Worked like a charm!
How come I get errors for trying to install this game?
Screenshot of my error:
http://i.imgur.com/Augrf9o.png
This happens after I choose a directory to download the game in.