I have a bit of a problem. I use Nero 6.0 and 5.5, Burn at Once, and RecordNow Max. I have a Sony 510A recorder and use Ritek G04 media. While using all three softwares, sometimes I get a good burn, but most of the time I get failures. On occasions, I will get a successful burn, but when I go to play the DVD, it will not play. I get an error saying that the format can not be understood. Please....someone help.