i have movie edit pro mx version 18. i have imported a video from my digital camcord and have been able to edit it. then i try to burn onto a dvd i get a message when it try to write on the dvd,"burning was aborted with the following error; internal error while processing. error accessing drive; might be being used by another application." what can i do. i do not have any other programs open. thank you for any help in this matter.