Borg#54016We are aware of some Episodes From Liberty City keys returning as invalid when being redeemed.We are investigating the issue further along with our partners. Games for Windows Live support may be able to issue you a replacement key in the interim.Please contact them for assistance with your key:Title: Contacting Games for Windows Live SupportLink: http://support.steampowered.com/kb_article.php?ref=8782-WECN-1190