It does NOT work on the Wii U. I'm not sure, it may be a hacking issue. One of the Wiis was one I did for a friend. I really don't feel like stressin over it right now. Trying to do 5 things at once here.They stopped working? :S
There's something odd, how could that game stop working on all your Wiis, and yet it still works on your Wii U?
Have you tried making a fresh install of NIntendont (deleting nincfg.bin, etc) and tried running it through a USBloader and the normal HBC app?















