Nero7 & DVD-R writing Problem

Hi. I seem to be having a probem with nero when buring dvd-video to dvd-r discs (TY brand).

Everytime I do it, it says completed without error, but when you look (or play) the disc there is a solid mark around the outter edge of the disc about 7-9 mm from the outer edge. It causes playback issue as you can imagine.

The strange thing is, I can burn a dvd-video image (using the same discs and burner (LG GSA-4167B) without any such problems.

Is this a problem with Nero somehow (Nero version is 7.0.1.4)

Thanks All