Thanks for the clarification, this is what I've suspected: there has been some misunderstanding, everyone seemed to assume that this was just a Nero 7 problem.
I don't think it's the media. It must must be my PC if the movie burnt correctly on my brother's PC.
You can come to this conclusion only if your brother has the same exact burner and firmware. If there is some variation in the quality of your DL discs, it's possible that a different burner/firmware can handle the burn better.
Just curious: did you leave the burning interface (in I/O settings of Decrypter) to SPTI? I guess so, but who knows.
Actually now that I think about it, it's indeed a possibility that recent Windows updates mess up with SPTI... so let us know if re-installing the system from your rescue backups solves the problem. This would be important information.
I will try one more on my machine and that's it. I've wasted too many already. Wish that damn media weren't that expensive.
Yeah... I feel your pain. But instead of trying again with Decrypter, try with IMGburn. If for some reason your Decrypter settings have been tampered with, the problem should go away when using IMGburn. Just an idea. Good luck