Have you installed the 1.2 patch ? to use Aali's custom driver for FF8 you need it, also make sure EAX is installed (usually comes with the 1.2 patch) before installing the custom driver, If this still hasn't fixed it, check to see if you have a app.log and if you do post it here. It could also be a UAC problem (if you are using vista,win7,win8) so you could also try installing the game to a non-system path (like C:\Games) and try that.