Can’t add animation to Metahuman in Level Sequence Editor, crashes the engine

Development Character & Animation
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1

(Reposting, accidentally deleted my first topic when I meant to hit edit :man_facepalming:)

Hi everyone,

I’m having an issue where if I place my Metahuman BP (the one that comes with Metahumans) into a level sequence editor then add animations to the body mesh, the engine will crash when I try to keyframe properties or even just scrub through the animation in the timeline. It’s causing an assertion failed error, see screenshot below:

Screenshot 2025-04-29 091031
Screenshot 2025-04-29 091031745×303 3.84 KB

Any help is greatly appreciated!

2

Hi everyone, I’m still having this issue and have been unable to get it resolved. The crash happens if I try to change AnimBP’s on the metahuman Live Retarget Settings, add animations or keyframe properties in a level sequencer.

I thought it might be because I re-assigned all of the metahuman skeletons to be the SK_Mannequin, so I freshly re-imported the metahuman and I’m still having the same issue.

Any assistance with this matter is greatly appreciated, if it’s easier to debug this on Discord please add me: Trilient

Thank you