Start next wont work with a container

[RuVo80]

Like Tondose writes, why use the container if u only play one file without imaging?

Instead of using play next in he news item, try the ‘Preroll’. Not in the news file, but in the next playing item. Playing next is a ‘hard’ time given on your item. Preroll is variable

New cue point 'Preroll'

When set, the item will be started earlier so that it arrives at Preroll by the time the previous item reaches its mix point (Start Next or Fade Out). Example: Cue In at 0:01, Preroll at 0:06 - item will begin to play 5 seconds early. You should be able to observe the effect in the Mix editor. Important: It only works in containers at the moment. Will be ignored when the item is played individually.