2D graphics appearing constantly

I recently bought GalCivII from a Target because I'd read good reviews on it. I get home, install the game, and start playing, it's really fun and everything seems to be working right. I then exited and did some stuff, when i came back and turned on the game and loaded my save, everything started to appear in their 2D symbols, planets we're circles, ships were the little grey ships. They were all 3d models the first time i played, WHY did they change? I looked in ALL the options, i tried hitting every key and key combination I could think of, but I can't get them back to 3d models.

The game really lost a lot of its appeal for me... I want to fix this problem! If you have any suggestions, please tell me