I believe this may be of some use to someone or to report to Nero's website: I've noticed regarding the (nmc_processing_exception) error, it only occurs for me when the total modified movie length is somewhere over 200? minutes in length. I can burn 182min, but when tried 204min, it failed. I'm guessing it was a bug in program - author never assumed burning past 3hours of video (after choosing video options: super-long play. ???