If you’re one of the unfortunate few that found yourself stuck in sector 3 Nintendo is offering a solution that will “save” your save file from the corruption.
If you are experiencing this issue, we are able to resolve it by fixing your save data. For instructions on how to set up a repair by sending us your save file on an SD card, or for other options, please call 1-800-255-3700. Representatives are available from 6:00 am to 7:00 pm (PST) seven days a week.
In addition they have released information on exactly what causes the glitch and what you should do to avoid it if you haven’t reached that point in the game. Details can be found on their support website.