Mark McDonut said:1) Have you tried tweaking the video modes in backuploader? (vidtv, force modes)
2) Is the game PAL running on an NTSC console/ NTSC on PAL?
3) Did you run the Iso through Wiu first before burning it to make sure it's the same region of the system you have?
4) Try running it right from backuploader within homebrew channel, rebooter may be giving you issues too.
give me an update and let me know if any of the above work