I have a home authored DVD-R which I tried to have 2 companies\nduplicate (around 40-50 copies). Both companies say their stand-alone\nduplication machine gives an error. They have no other advice. I\nburned several different formats (ISO, UDF, and ISU/UDF) for them to\ntry using Nero. They cannot duplicate any of these.\n\nIs there anything else I can do to make my DVD-Rs be more compatible\nwith their duplication machines? The discs work fine in all the DVD\nplayers I have tried. Do some burning tools work better than Nero?\n\nI used Adobie Encore as the Authoring tool.\n\nOne company said the files copied to the duplication machines hard\ndrive and the file sizes were correct, but they got an error when\ntrying to burn.\n\nThanks.