"cannot start scene because its parent quest was not running" - how to solve this error?

[DayTri]

I'm working on a mod where a scene should start after a quest starts. I have three reference aliases which create actors. I have a scene which uses those actors which is started by the quest's startup stage. However the scene never starts, and in my log I have "cannot start scene because its parent quest was not running".

 

I know this not accurate, because the quest does start. I've tried using Utility.Wait() to delay calling the scene in case there's some kind of slow start which needs to happen, but still nothing.

[DayTri]

Well, figured it out after writing this topic so will share my solution for other people.

 

It seems like maybe every function call in the startup stage papyrus fragment needs to resolve before the quest is considered running for this purpose. Seems like that even includes papyrus fragments in *other stages* which are directly called by SetStage() inside the startup stage fragment.

 

I was able to make this work by starting the scene async; using a RegisterForSingleUpdate(), and then starting the stage through the OnUpdate event.

[traison]

Generally you should think twice beforce waiting a long time (>1 second) using Utility.Wait, or having a loop with more than a hundered iterations. Papyrus is a slow language because its artificially gimped to only do a set amount of operations per frame by default. Where other languages would do a million iterations, Papyrus might get through 100. Usually when you want to wait for something, or have a long-running task, OnUpdate is your friend for keeping Papyrus happy.

[Lyreal]

I guess you misunderstand the "quest's startup stage" like I did for a long time.

It is not necessary to tell the game which stage starts first (always with the lowest stage)

 

Untick the start up stage Tickbox and it should work.