Lightscribe half labeled discs

I am having problems with my lightscribe labeler. I have a Samsung se-s204n. I am using verbatim dvd+R lightscribe capable discs. The last few have come out half labeled, not completing the job. Beyond that i dont know what to say, I have no idea why this is going on.

I have since updated all drivers involved with the the burner and lightscribe software to no avail. Still half burned discs. By the way I am using sure thing as my labeling software.