Hi, I have a problem. When I try to install my Call of Duty: Modern Warfare 2 CD, it says I need Diamond tools and I need to extract the files. Everything works great, except that when I double-click the installer (it has a crossover mark on it), after I finish the first step into where I want to place it, it says there is some sort of error and won't install... Please Help... 😕 😭 😥