Maybe some burning/extracting methods that Nero uses alter .bup and .ifo files (I don't know, I've only used Nero Express to burn), but I just extracted a DVD that I burned using Nero Express, created an .md5 with MKWact and the files matched, including the .bup and .ifo files. I looked on the show's webpage where the .md5 is pasted into the first post of the show to check that they are the same. Nero Express is just an option from the main menu of Nero Ultra 7. I use the default settings when burning video DVD's.