not only that but when you unistall the game it will leave the jsgme and any game files that were installed by mods and its common mistake to uninstall the game but forget to first uninstall the mods so go look in your directory files and delete the sh4 folder inside your ubisoft folder, it has a sh3 game folder AND a sh4 game folder inside it
thats the one causing problems
delete that file and sh4 will load right up for you