Metahuman Expression Editor Not Working

Development Character & Animation
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3

Hi Chris,

Thanks for replying! I did the assembling inside the expression editor window after selecting the head.dna exported from UE, so I believe I am following the process correctly. Just checking the script editor and the assembling fails at:

RuntimeError: Node '|PivotImage' is locked and cannot be grouped.

This is causing the expression rig assembly to fail silently and doesnt finish the process. Here is the full log:
console.txt (27.4 KB)

assembly-error
assembly-error1920×1289 121 KB

I tried with different Maya versions (2023, 2024 and 2025) but all give me the same error during the assembling