DVD won't play

I just ripped and wrote a DVD using Super Clone DVD and AnyDVD. Both of the discs were burned OK with no error messages. But when I place each of them on my DVD player, it won’t read it. What could be the problem?

This is a double post
I’d recommend you to look for ripit’s advice here in your other thread
http://club.cdfreaks.com/showthread.php?t=168569