It seems after days of testing, some of the games are not loading on the Xbox 360 all the time. Sometimes they give an "Unplayable Disc" error. I will test my theory out, but I think this might have been cause by burning at 4x. I have always burned backups on my PC at 4x, but it has a Pioneer 111D which works well with the Xbox 360. I don't have too much experience with the Matshita drive that most MacBook(Pro)'s come with. I will be testing at 2.4x from now on to minimize the chance of a bad burn. If you have a Mac and are willing to test various settings it would be appreciated. I have accumulated a large amount of coasters creating this software.