As far as I know, you MUST "run as administrator" if you are authoring a dual layer DVD (and, maybe, a BluRay)
Run as Administrator http://forums.adobe.com/thread/969395 (Encore AND Premiere)
As far as I know, you MUST "run as administrator" if you are authoring a dual layer DVD (and, maybe, a BluRay)
Run as Administrator http://forums.adobe.com/thread/969395 (Encore AND Premiere)