I have bought a Civilization 4 gold edition game used one and I installed the game as per the first post. When I click on the civilization 4 game icon its not opening the game or not giving me any error message. It's doing nothing and this one is without installing any patches. Also I have downloaded all the patches and when I try to install a patch 1.61 its saying "the setup has detected no version of Sid Meier's Civilization 4 is installed. This update requires that a previous versions of the application be installed." So please help me to solve this issue.