This sounds like a problem I've been having that isn't documented anywhere in the manual or official videos. If the flock setting in the main Puppet Stage has 'Mimic Leader' checked (as shown in the image - and for some reason this checked by default) then none of the auxiliary props attached to the window will work. Uncheck this and everything works. I demonstrated the issue in my recent Puppet Stage Video on adding Auxiliary Props to your character (video should start at the relevant point): https://youtu.be/5zUz_bWY_5w?si=Ty8bdqPOg5AP096S
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