The attempt to burn a disc failed. An unknown error occurred (4850).

This happened out of nowhere. I just burnt an audio CD last week, as I do many times a week, and all of a sudden my iTunes cancels a burn within the first 15 seconds of every burn. I have tried numerous CD's, I have reinstalled the newest version, I have deleted my device driver for my CDR/DVDR drive and reinstalled it, and can't find a CAUSE, nor plausible solution to this unless it's going out and buying an external burner! Not practical. Does anyone one what (4850) is from APPLE and can you please give me some help here!? Thanks!