Ensure your custom firmware (Mocha, Tiramisu, or Aroma) is active before launching Loadiine to avoid black screens or crashes.
Once extracted, move the resulting folder to your SD card under: SD:/wiiu/games/[Game Name] [GameID]/ LG-DMS-EUR-LOADIINE-ZIPERTO.part3.rar
(Part 1, Part 2, etc.) into the same folder on your PC. Ensure your custom firmware (Mocha, Tiramisu, or Aroma)