What version of Premiere Elements are you using and on what computer operating system is it running?
Whatever the case, the answer to a question with "Vobulator" in the error message 99.99999% of the time is that
you have a stop marker at the end of the last item on the Timeline and it needs to be remove.
A stop marker at the end of the last item on the Timeline is not necessary and is highly problematic when placed there.
Please let us know if that worked for you.
It works. Thank you very much.
Great news. Glad the suggestion worked for you.