@FennecWF Hi! sorry for late reply. I have no blender experience, only minor Unity experience, So I'm not entirely sure how to help, but im pretty sure that the only missing script is probably the Breath shader the avatar has for a gesture, it should be on the avatars tongue in the hierarchy, so if you delete that it could work, but other than than that I won't be much help with blender stuff and missing scripts, sorry.
Also the image shows where you should be able to find what could be the missing script.
Screenshot 2025-03-28 015937.png
