Well, SJ is correct. :iagree: Turns out I had ImgBurn set as my default burner, so the message WAS from ImgBurn.
Anyway, tried it again, this time using the VSO with layer break removed per Jimbo's advices. Got the dreaded "Error 116" at the burn phase. So, changed back to the ever reliable ImbBurn for the burn. After again receiving the "multiple of 16" message, clicked on the "recommended layer break" option and it burned perfectly. Played the dvd and the layer break was barely noticeable. Yes!!!