Votes
2
Product:
Character Creator 4
Version:
4.54
Status:
Not Reproducible
Issue 12092
Jaw morph is not working in unreal 5.5
The jaw morph target is working fine in character creator 4, but all of the jaw morphs in unreal 5.5 are not working correctly.
I have followed the plug install guide for unreal 5 and every export tip I can find but nothing is working.
OS: Windows 11
Attachment:
  • Screenshot 2025-08-14 113935.png
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Submitted byJadeGear
1
COMMENTS (3)
Feedback Tracker Admin
Hi ludwig.seibt

Thank you for your question.
The “Convert Skinned Expression to Morph” option is not available for ActorBuild characters, because they are embedded characters with a fixed setup. Unlike standard CC Base characters, ActorBuild characters do not support converting bone-driven facial expressions into morphs.

This means that while ActorBuild characters can still perform facial animations through bones after export, they will not generate morph targets (blendshapes) for expressions.
If you require ARKit blendshapes or morph-based facial expression editing in external software, we recommend converting your ActorBuild character into a CC Base character before export.

We hope this clarifies the limitation, and please let us know if you would like guidance on how to convert your ActorBuild character for morph-based workflow.

Kayla
Reallusion
ludwig.seibt
Hey. I have the same problem with an actorBuild Character. Both options "Mouth Open as Morph" and "Convert Skinned Expression to Morph" are greyed out in the Exporter. I need a game quality character that has ARkit blendshapes including for mouth, jaw and tongue. How can I achieve this?
Feedback Tracker Admin
Hi JadeGear

This issue is related to one of the options in the Advanced Settings of the Export Settings.
If you check the "Convert Skinned Expression to Morph" option, adjusting the Morph sliders will display the expressions on your character.
When this option is not checked, it will only drive the character’s bones.

I hope this resolves your issue.
If you have any further questions, please feel free to contact us again. :)

Kayla
Reallusion
Attachment:
  • 螢幕擷取畫面 2025-08-15 102156.png
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