Hey Burn, When you say you "Copied the files to the disc", did you copy the folders of the files? In order for it to be a "movie DVD", you have to have on your disc a VIDEO_TS and to be on the safe side, an AUDIO_TS folder (Cap's is necessary for highest rate of compatibility) All of the .vob, .ifo, and .bup files that DVDShrink made should be placed in the VIDEO_TS folder. The AUDIO_TS Folder is empty. If you want to have a screen-saver for your DVD player when the Disc is in stop mode, then you can also add a JACKET_TS folder that you can place .mp2 images in (But that a whole different topic), but this folder isn't needed. If I am not mistaken (I am at work so I don't have acces to any of the programs), when DVDShrink finishes it doesn't automatically create the VIDEO_TS folder for you. When a DVD plays, it looks to the VIDEO_TS folder for the files, and if that folder doesn't exist, it will give you that error message. Hope that helps you!
-Burdzy