I don't understand. What do you mean by readable? And what errors or regressions are you having preventing you from burning one? What DVD burning programs are you using? Do you have the needed codecs and such to play the content you are attempting to burn?
Sorry, but at this point we are unable to assist you in this matter. We simply need a more accurate and much more descriptive and detailed summary of your situation. Without this, it would be impossible to diagnose potential problems. Basically, you have stated a problem without any detail. It's a little bit like asking "I can't slice bread. Why?" Help us help you, and you will begin to receive more meaningful answers helping you overcome your problem.
Remember that a simple Google query often can give you needed information.