Hello! When I put a backup into my Wii, it just says; "Unable to read disc". Although, the backups can be read sometimes, but it's quite rare. Original games works just fine. I have Wiikey with the latest update "1.9s". My DVD's are Traxdata DVD+R 16x And oh, it's a higher possibility that the backups can be read, if the Wii has been turn of for some hours.