Things You'll Need
Instructions
Turn on your Wii.
Put in the backup disc.
Access the Backup Loader 0.3 channel.
Click "Config Menu."
Experiment by playing with the "Force NTSC," "Force PAL50" and "Force PAL60" options. Depending on the region you bought your game in or from either one of these options turned on may fix the issue. If it doesn't continue onto Step 6.
Reburn the backup using your computer's burning software. Burn it at the lowest speed possible to prevent errors.
Put the new disc in the drive and attempt to play it in the Backup Loader 0.3 Channel.