I'm on Wii U and I installed the games on my sdhc card. It happens in every Just Dance: 2, 3, 4 (I still don't have the 2014). I installed the wads (and I know they're good because they worked on my old Wii), and while I can check the store, and see that the purchases require me 0 points, every time I try I get "Internal error on the sd card". I tried reinstalling the wads, but nothing. I don't know what to do, because it always worked on my old Wii, and the only difference now that I'm on Wii U is that I installed the games on the sdhc card instead of the Usb. Any ideas?