MetaHuman Crowd: Custom MetaHuman Character in Crowd Collection — untextured face and head/body misalignment

Environment: UE 5.8, MetaHuman Crowd plugin (Experimental) + MetaHuman Crowd Sample from Fab, Windows 11

What I’m trying to do

I want to add a custom MetaHuman Character (created with the in-editor MetaHuman Creator) to a Crowd Collection, so its head and body can be used in random crowd combinations alongside the sample archetype characters.

Setup

  1. Created a MetaHuman Character asset (MHC_Able) in the in-editor Creator, with skin/face fully set up.
  2. Duplicated the sample’s CrowdCollection (which uses BP_CrowdPipeline) into my project’s Content folder.
  3. Added MHC_Able to the Collection twice — once in the Head slot, once in the Body slot — the same way the sample’s archetype characters (MHC_AverageFemale_Head01, etc.) are set up.
  4. Rebuilt the Collection (Auto-Build For Preview enabled, also tried Clear Build Cache + full Rebuild).

Problem 1 — Face renders untextured (solved, but reporting for reference)

The custom head rendered with no skin texture (plain white/grey face) in the item thumbnails and in the built preview, while the body skin and clothing were textured correctly. Even the Principal Asset thumbnail showed a white face.

Problem 2 — Custom head misaligned with bodies (still broken)

After rebuilding, the custom head does not sit on the neck; it floats forward at chest height when combined with a body. The sample archetype heads/bodies combine fine.

Any pointers would be much appreciated — I’ve been stuck on this for days.