Distroplat either could find, or couldn't create the track renderer you were looking for. If you were expecting a playlist, please check your selection on the Formats page. Note: The playlist cookie from distroplat v2 is not compatible with v3. You will just have to quickly check back and choose again.
Otherwise, someone has been messing about with the '%NAME%' template and it is not working. Shout loudly until someone fixes it.