Finger posing issue

Just revisited my old custom skin, updated it and everything.
When I soon noticed I can’t finger pose him…
Face poser works fine, but the finger pose menu refuses to appear?

As you can see he’s pretty much a plain citizen ( yes those are elements from Rustys epic survivors)

Anyone got any ideas what’s happened here? and a possible way to fix it without having to rehex the model? (I forgot how…)

EDIT: Never mind! Fixed it anyway. Had to re hex it in the end.