Issues with avatar auto setup

I have worked with a 3D modeler to make a custom baby character model. Now, when I use avatar setup on it - it works with no settings applied. However, the arms never work. When I apply the “handle face as 2D decal” it won’t finish the rigging at all. I’m wondering if this is a bug or if we’re not modeling correctly as I sometimes get almost perfect results. I’d also like to say that the avatar auto setup also adds weird / extra shapes to my model.



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Thanks for reporting this.
The “handle face as 2D decal” uses 2D texture and try to find eyes / mouth etc. facial landmark. It’s intentionally develop for converting some existing head to animate 3D (so, it may cause issue on body etc.). For your case, I think it does not have facial feature, so it would fail as expected.

For the body, my guess is that auto-setup is confused by its front and back (front and back are the same), and rig the arms in wrong direction. Using “manually align front” option may help if this is the case. We will check the files you shared to get a more definitive answer.