First question: do you have a Stop Marker at the end of your Timeline? If you do, remove that, as it is unnecessary, and will cause errors with the Transcode for DVD production.
Also, is this the exact same problem, as this thread: http://forums.adobe.com/message/5956820#5956820 ?
If so, we need to continue in the previous thread, and Lock this one, or confusion will reign.
Good luck, and please let us know if the two threads are the same.
Before Hunt locks this thread.
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99.99999999% certainty that you have a stop marker at the end of the last item on the Timeline. It is not need, causes problems such as described, so remove that stop marker.
Please let us know the outcome.
I will be surprised if this not the cause of your error as Hunt and I have mentioned.
Looking forward to learning of the outcome.
Reading both threads, I do believe that they are exactly the same.
I will now Lock this one, and think that we are all better off, continuing in the previous one, as it has more responses - all the very same.
[Thread Locked - see linked duplicate thread to respond]