I just got homebrew set up on my Wii Mini and installed the required cIOS files. I used Wii Backup Manager to set up all the files correctly. My USB drive was formatted to FAT32. However when I boot USB Loader GX up, it shows a white screen and I can't do anything except move my pointer. I can't even go back to the Homebrew Channel. I'm forced to turn the system off. Any ideas of what went wrong?