We have had several of this question recently, and all have responded to the same fix. Let us see if the fix works again.
Did you have a stop marker at the end of the last item on your Timeline content that you were trying to burn to disc? If
so, remove it. It is not needed, and it causes problems.
Please let us know the outcome. If this fix does not apply to you, please give more details.
Looking forward to your follow up.
I did have the stop marker at the end of my file, which when I removed it the burn completed successfully. Since I have been using PE (first vers. was PE2) I have always inserted the stop and never got this message before. But why now is not really important as long as the problem was resolved. Thank you for your prompt help and fix.
Great, great news.
Thanks for letting us know the outcome.