i have the same problem and im running tiramisu...Are you running Tiramisu?
In case you're on Tiramisu you didn't follow the official guide ( https://wiiu.hacks.guide ). In case you're on Aroma download sigpatches from https://github.com/V10lator/SigpatchesModuleWiiU/releases and put the 01_sigpatches.rpx file to/wiiu/environments/Aroma/modules/setup
on your SD card.
NUSspli wont allow me to delete the corrupted files if thats what your referring to?Well, let's fix your USB drive first but what you could try afterwards: Delete both, the game and the DLC with NUSspli (this is important as data management won't delete tickets but we want them to get removed). Then try to download and install both with NUSspli, too. This might take more time than USB Helper but maybe it works?
On a side note: https://github.com/Xpl0itU/WiiUDownloader/releases is the new USB Helper, so better use that.