I saw that here in the forum someone had the same problem a time ago. This only applies to the Revolution Pi with RevPi Nodes. As we also had the problem, I will post the solution we found for reference.
Solution : We used a new image. On the newest images, nodered and the nodes are pre-installed. Then enable the server service and start it. Then enable and start the nodered service.
Lösung : Wir haben ein neues Image genommen. Da sind NodeRed und die Nodes bereits installiert und funktionieren. Erst den Server aktivieren, dann starten, dann NodeRed.
Cheers,
Boris