Hi Mat,
I will have to do a proper fix and release. But here’s a fixed version for you.
https://cloud.moonstringanimation.com/index.php/s/M2dYdMNQopZXSTZ
Basically old custom properties have to be updated to allow them to be overrideable.
If you copy over your existing rig file with this one, it should link in correctly. (just back up first)
