I believe it was 2.1. This was some 2 weeks ago and my game was supported by Epic. and was up to date until I was notified to update the code and then this transpired. I must also add that paying $49.95 for the new update now available is just a complete ripoff, since 4.0 cost ne the same. Stardock has become too money hungry. An expansion should Not cost more than $29.95.