The update for Majora's Mask 3D is finally available! You can download it from the eShop or from the Home menu.
1) no more "ERROR" messages
2) fixed the glitch with the sword at the Honey and Darling Minigame, that allows you to go swordless. The exploit can be used to use any item (including the Fierce Deity's Mask) from anywhere in the game.
Source http://www.nintendo....date/index.html
Available in Japan, EU, not sure if it is live in NA yet.