If the game will not save your Singleplayer games etc, or update, make sure it is in a folder it has write access to, such as your Documents folder, or a folder you yourself created (not program files). It uses the old long-deprecated paradigm of saving things in its own folder rather than the user\'s home directory/documents folder.
It\'s a good paradigm if you want to carry the game around on a usb key though, if it fits.