Quote Originally Posted by wagoner
.... I was thinking that a commercially purchased disk would be of good quality, but perhaps not. ....
My expectation is exactly the opposite. I have no experience or knowledge of your particular vendor, but in general those selling discs this way tend to burn them as fast as they can to maximize profit. Think of it as "I can burn this disk in less than 2 minutes, or in 20 minutes or more if I make the effort to do a low speed burn". Which do you expect someone trying to profit by selling the work of others to do? They also tend to use cheap media, which may also be a problem, but we frequently see that high speed burns cause exactly the problem you report, the disc works in some drives but not others.

Good luck on the reburn. Don't forget to run the md5 test, it is very important if you don't download with BitTorrent, and worth doing even if you do. And please post back to let us know your results.