Download and install both versions. Also, sounds like I need to re-download 7.1.4 since the first download it is not seen as valid by windows...darn.

Thank you!

Same post over at Matrix... Hi, Bought two of the add-ons and downloaded them. Also, downloaded the main game. When I try to open the main game zip-file, windows says the file is invalid and it will not open, v. 7.1.4. Please say I do not have to re-download the 2.7 gigs...:( I have a metered connec...