I've installed a lot of games using the Wii U USB Helper program just fine. I've even installed a couple Japanese ones no problem. However, this one game seems to be causing an error. It's "Taiko no Tatsujin Atsumete Tomodachi Daisakusen", which seemed to download fine but when I try to copy it to my Wii U, I get the error "The remote server returned an error: (550) File unavailable (e.g., file not found, no access)" for the game, its update, and the DLC. I think the issue might be with the Wii U, but I don't know what exactly the issue is or how to fix it. I have successfully downloaded and installed games before and after attempting to install this game.