I just ran into the same issue, I'm running Win7 Professional. Someone on this forum said to right click and run as administrator. I did that and it worked fine. Must give it priority or something. I've run it in the past without any problem on this same computer. Have to admit I don't clone to many of my movies so I don't use it often. Just want to put something on my IPad for the weekend drive. So thanks for the help.