GSA-4163 problem!

Hi,
i’ve just got an oem LG GSA-4163, internal dvd writer. I’ve tried to burn data and movies on some Ritek DVD-R at different speeds but nero is always saying that the booktype is incorrect and i cannot burn it!!
What is the problem??
Please help me!!

try reinstalling nero

hi, i did reinstall nero but it still didn’t work!!