>Same problems with admin rights
Right click the program icon and select Run as Administrator, which is NOT the same thing as running the computer with the Administrator account, and which fixes several "odd" problems... To create a two layer DVD or a BluRay, you must have Encore set to use the Run as Administrator option
Run as Administrator http://forums.adobe.com/thread/969395 (Encore + "All" Premiere)
What is the specific error? Post a screenshot if complicated.