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MetaHuman crashes Unreal with unregistered hair components

Hello – any suggestions for importing MetaHumans into Unreal? The Editor crashes each time I attempt to add a character to a scene level. The log file suggests that there are issues with hair components. Here’s a log snippet from importing the readymade Amelia:

[2021.05.01-00.50.56:566][818]LogActorComponent: UnregisterComponent: (/Game/Main.Main:PersistentLevel.BP_Amelia_2.Hair.NiagaraComponent_1) Not registered. Aborting.
[2021.05.01-00.50.57:973][822]LogMac: === Critical error: ===
SIGABRT: abort() called

The crashes are 100% reproducible and occur after:

  • download and export character from Quixel Bridge
  • click to accept all Unreal update dialogs
  • compile the MH character BluePrint (eg: [0670.07] Compile of BP_Amelia successful!)
  • drag BP_Amelia into the scene level view

The character appears in the scene view briefly – notably without any hair – then Unreal crashes.

I’m using
Quixel Bridge v2021.0.0
Unreal Engine v4.26.2
Mac OSX v11.1

TIA!