My version of Roxio 2011 worked fine for a few years....well, since 2011....but a couple of weeks ago it would cause my laptop (Windows 7) to crash every time it got to about 30% through encoding my mp4 files.I had made no changes to my OS or anything else. I tried repairing it through the Control Panel, but that didn't work, so I checked the Roxio site. Roxio no longer supports Roxio 2011, so I bought the upgrade to NXT 2 yesterday. The exact same problem with NXT 2. Help! Thanks!