Memorialkestrel

Hello Game looks great so i got it on steam loaded it up and went into the campaign, got passed the cutscenes and... most of the textures are missing. other units are invisible and only one direction I look has a ground. I can still see the sea below and the sky. My graphics and audio drivers are updated. I'm using an Alienware M17x R3 with Windows 7 professional 64-bit 32GB ram Nvidia Geforce GTX 580M Intel Core i7-2720QM CPU @ 2.20GHz I'm hoping it's a quick fix but if not i'll wait

Thank you for the replies Sorry I had to wait till I returned from work to try any of the ideas. I tried preachers idea first as it seemed to be quickest to try and it seems to be working for the time being. so thanks for the help memorialkestrel