After 1 month of working, I figured out the problem. The statistics say this can't happen, but it did. Normally with this kind of error, you should try different media, blow out your drive with compressed air, all of which I did to no avail. Then, after doing everything, I replaced the bluray burner drive. Originally, I had a Plextor that showed this power calibration error. then, I bought a new drive and got the same error. I even tried replacing the SATA cable and a different SATA connector on the motherboard. In the end, I thought having a newer drive prevented me from the same problem. But it didn't. When I replaced the burner, the error never showed. It was a bad Bluray burner. And though it sometimes burned fine with one program or another, the drive must have been dying. Too bad drives can't tell you when they are dying some other way like being SMART capable, but they can't. So, a new burner fixed the problem. I think this is significant. So, with 2 drives with calibration errors (what's the chance of that?), I found out both my old and several month old drive were both bad and a new drive fixed the calibration error problem. Roxio NXT is NOT, NOT, NOT, NOT the problem. So glad to be back burning again! thanks for all who helped.