No matter how much I tweak the different parameters, my puppet remains the same. It is definitely ON, it's got the red dot. All other behaviors (Lip sync, Face, Eye Gaze, etc) work perfectly! I don't understand anything as it happened out of the blue. Any troubleshoot ideas?
There is a "refresh" button in the scene panel. I think if you hold down "ALT" when you press it, it clears multiple internal caches. Occasionally this helps. If you export and import, this probably does the same thing. Just a suggestion to try if export/import helps, try refresh on the main project next time.