I have a NEC 3500 and have been using fw 2.18 with booktype setting for the last 200 disks or so (all TY). Suddely I a "power calibration error" in Nero when I was trying to burn a TY from the same batch I've already burned 30-40 disks. Tried another disk, same problem. Let my drive cool down: again same problem.
So I thought my drive was broke and I flashed it back to the original 2.18 firmware without booktype setting. Again I tried to burn a DVD on one of the TY's I was trying to 20 minutes earlier and without any fuss it worked. The disk is perfectly ok (obviously its a DVD+R now and not a DVD-rom).
Any ideas what might of caused this?