Anyone know how to work around this apparent bug?: render and prepare with dvd-a, then burn with nero 6, resulting in dvd that plays fine using power-dvd 4.0, but when you try to go to the next chapter, it keeps saying that the disc may be dirty and is not playable...

i'm using nero because i want to make a ISO/UDF 1.02 disc for an older DVD player.

Any thoughts??