Total revamp of this review, seems the problem with this game and the rest of the Agri Sim series is their reliance on some of the earliest PhysX technology. If your copy's working after installing nvidia's legacy physx drivers, and you update the video card drivers later on, you will need to reinstall the legacy physx package after the video card driver update, since something in it gets busted.
Note here, if you have one of Ati/AMD's latest video cards, NONE of these games, nor others that require the legacy PhysX pack (original Two Worlds, Darkest of Days) , will likely EVER work for you. Nvidia's too cheap to provide an install for you guys, unfortunately.
As for this game...just avoid it. It's like a midpoint between AS 2011 and 2013, so has tons of bugs and missing features. Some crops will refuse to sell, animals sink into the ground, etc. There's a reason you get it as a free bonus for buying the "super duper edition" of their Professional Farmer game...Historical Farming should have just been left in the past.