Lightscribe won't burn
This is usually due to a "cleaning" problem on the marks in the HUB Area.
Go to the "LightScribe ToolBox" & then to "Knowledge Base" & search for "No Label" in all Topic.
Yes, I am referring to the area with the marks, they are used for Media Dectection, Positioning, & Timing.
If you use your burner alot, you may have to clean the laser.
I use a kit from Philips.