[Gumpy]

When you uninstalled it did you go into program files/Ubisoft and delete the game folder it leaves behind?You must do this after a uninstall because it leaves the game folder behind there could be a corrupt file in there.Error 1503 is a common Windows error. Error 1503 is usually caused by missing system files, wrong system settings or a corrupted registry file. Run a registry scan to check for registry errors & other system problems. 96% of the time this will fix the cause of the error. Did you create any shortcuts to the game?If you did delete them before trying a fresh install.