After a very long period of scanning, I get the message " some DVD information on D:[4 months] cannot be read. you can choose "main movie" or "customize" to copy it. I tried main movie - it analyzed to about 70% then didn't reach 71% after another 20 minutes, so I aborted. The master is fine and I'm using the same hardware and media that I've used for hundreds of backups. Any thoughts - thanks!