There's a known issue when you launch CEG and get prompted with the following:
This error is typically due to you using our new Elite Gamer platform, and the two programs are conflicting with each other.
At the moment, Elite Gamer and Classic Elite Gamer aren't playing nicely with one another, so it's advised only to have one installed on your machine at a time. Don't sweat it if you change your mind on which one you would like to use! You can always go back and download both versions, just make sure to completely uninstall the version you're currently using. Here are our guides to uninstalling either program: