Please help, Hard to be a god wont install

[Genova]

Ok its not working again, I have played it but then when I go to play it again it acts like its not installed on the computer and my virus blocker pops ups again saying about the trojan, The only way I was able to even install the game was to turn of my virus protection program, install the game but then as soon as I turn it on again it messes with the game so I have to reinstall it. I am using McAfee V 9.5 How do I Add the executable as an exception.