I backed up my copy of 'Rise of Nations' in case it was damaged by a friend (which it was and is now unusable) into .iso format and mounted it to a cd. All is fine in installing the game, yet when I go to play it, it either asks me for a cd (which IS in the drive), does nothing at all(by clicking the desktop icon) or opens a message saying "translated_string.xml not loaded. File missing?" It also says "internal_string.xml not loaded. File missing?" and then tells me there is a 'serious watson error.' What's going on? It played the first time perfectly well, but now it will not work?