I bought an SD 2 gig memory card, standard for the wii, put my Just Dance 2 in, go to the store, find Firework by Katy Perry and download to SD card, get 75% and report pops up saying Internal SD Card Error... nothing else. Do I have a defective card? Is this standard for the free song? I do not want to buy other songs until I know they will save. Heellllppp!