Time Warp causes validation errors while day sequence device needs it to work

[Wertandrew]

Summary

Time warp inside sequences is not allowed, however the day sequence device references it so this feels like a bug.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

Add a level sequence with a cinematic sequence device in a level
Inside the sequence, add a time warp (play rate curve)
Launch live edit

Expected Result

Live edit opens

Observed Result

Validation error: Disallowed reference to /Script/MovieScene.MovieSceneTimeWarpDecoration, Referenced by:See below for asset list

Platform(s)

PC

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[Wertandrew]

When this happens, it corrupts the sequence even if removed. Only way to fix is to duplicate all keys to a new sequence and delete it.

[Max.Chen]

The fix for this will come out in 37.10. Here’s another post about it:

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Summary The TimeWarp feature in Sequencer cannot be used in UEFN. When I try to play using TimeWarp, I get the error “Disallowed reference to MovieScene.MovieSceneTimeWarpDecoration.” Is this a feature that is only available in UE5? Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experiencing? Other Steps to Reproduce Please set up a sequencer to animate a skeletal mesh, apply TimeWarp to adjust its playback speed, and then play the map in Fortnite…