Have a free to distribute educational DVD (preparation for a test) that I need to make a copy of for a friend. Downloaded MacTheRipper and copy the DVD. Next I downloaded a freeware program called Burn that looks simple and is all I need. However I when I try to burn I get an error "Failed: There was a problem authoring the DVD" Also I tried to use the burn to a data DVD mode and it wrote the data to the DVD (you can physically see it's there) but when it got to finalize I got the same error message and you can't read the DVD contents. I have a new Mac Pro running 10.5.3 and the DVD drive is OEM PIONEER DVD-RW DVR-112D.