Hi All. Hoping for some advice, I purchased DOWII Retribution Last Standalone and DLC through steam a while ago. Recently I received as a gift the full version of DOWII Retribution with The last standalone, but it won't install on steam. When I try add it to the steam library through the gift options it says I already have it... but I don't. I have the last standalone only. Tried uninstalling and reinstalling, same problem. Its says the game is already in my library when it clearly is'nt. Hope someone might know how to sort this.