In fact perhaps i should re install pilot mouse !
caus i can scroll others things, why nor in Blender ?
Strange !

For animations export , entering a frame start and a frame stop could do the job already.(Caus i create only one action and make all animations in it).
It will be lot less work to you to modify in that way.

For bones weights , i have commercial version of A7
so only one bone per vertex is supported !!
So your script is perfect (it chooses the closest bone influence).
But ,if you make bones weights, you could keep a button to choose:
- "closest bone per vertex" or
- "multiple bones per vertex"
that way , commercial version owners and pro others
will be each happy