Some dvd/cd drives can be picky about the brand of blank discs you use. You should verify compatibility with your drive, if it requires +R, -R or if it will use either. Some people said they had better luck with +R and their lg drives wouldn't recognize -R. Some good brands to try are verbatim, tayio juden and when I have neither of those I've had pretty good results with sony also. The sony's I have right now at hand are dvd +R.
No real experience with the lg drives. I used to use lite on but the couple of models I had were a real pain with intermittent success and stability problems, problems writing to blank media or recognizing media burned off that same unit. I switched to an asus I've used the past 4yrs or better with no issues.