Hi @grlkrash
I can’t tell exactly what’s going on but I can see in the outliner that you have 2 armature objects.
1 is called “Armature”. And the other is called “Armature.001”
It’s quite possible that the armature modifier on the mesh is targeting the incorrect armature object.
That’s the most logical thing I can see from these images – but if that isn’t the issue you might have to post the file.