Ordinary I would ask "What version of Premiere Elements and on what computer operating system it is running?"
But in this case, "Vobulator" is glaring out at me.
For Premiere Elements (essentially any version)....
You have put a stop marker at the end of the last item of your Timeline destined for burn to.
Remove that stop marker. It is not needed and causes this type of problem.
Please let us know if I targeted the core of your issue.
It worked very well... Thanks!
Sent from my iPod