I cannot get the demo to run. Keep getting windows error. Any Ideas? Running an I7 920 processor, 8G RAM, Windows 7 Home prem 64-bit, video card is a ATI Radeon HD5770 1024 MB GDDR5. with McAfee anti virus and firewall. I have pre ordered and it is not looking to good right now. please help! I have tried to run as admin as well.