Hello, recently I've been trying to play Smash for Wii U, and have been getting an error code that the Wii U is having trouble reading the game off of my USB with the game data. I've had the game since release and haven't had a problem with it until now, but I'm guessing it has something to do with the update error people have been having.
What's basically happening is that the game used to run fine on the menu screen, but whenever I tried to enter a game mode (namely through the character select screen) the game gave me an error screen. I've tried again yesterday morning after a few days of not playing it and now it just gets stuck on the loading screen after the intro, forcing me to restart the system. With that in mind I don't know what the error code in particular was, but I do have found some past codes in my system memory, one of the most prevalent being Error Code 150-3032. The error used to come when I tried to transfer the game data to the system memory as well.
Basically I want to know if there's an easy way to transfer the game data over to the Wii U or another USB without having to restart the file. (I'm already kinda far ahead in the game so you can probably assume that I don't want to start again from scratch. 
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Any help is appreciated. 
(Also if it narrows anything down I made data for Hyrule Warriors and NES Remix Pack yesterday.)