adywan said:

Try burning your copy with IMGburn instead. Nero isn't the most reliable burner. Or it could be that your DVD writer is on its way out or bad media

As for the download then it sounds like you have a bad rar file. find out which one is corrupt and try re-downloading it

It could also be a dirty laser on the burner itself. I will clean it and use ImgBurn and post what happens.
BTW, how can I tell which RAR file could be corrupted?

UPDATE (10-20, 3:05pm EST):
set view to "detail" and saw that 2 of the RAR files were incomplete. Redownloaded and unzipped successfully. The problem now seems to be ImgBurn:

Optimal L1 Data Zone Start LBA: None Found! (VTS_51)

This Image has not been mastered correctly for burning onto a double layer (OTP Track Path) disc.
None of the cells meet the "DVD-Video specification" criteria for a potential layer break position.

Do you want to continue anyway?

Does this mean that the Fanedit ISO does not include the fix posted in the previous posts?