My Wii be broken and will not read it anymore.
I had the same problem, its your wii's fault in a way. Super smash is a very large game and it uses a double layer disk. So some of the old wii's have a problem reading it, so Nintendo is reaping them for free. All you have to do it go to the Nintendo site, do all the crap, and they send you a label to send it out, and they'll send it back fixed. All you have to do is provide the box, that's my only problem, I cant find a box
<, and you must send super smash with it.