>>2386852I haven't checked the motion myself, but some motions require 2 additional bones for the feet.
As seen in the pic, the left(Haku) has two special feet bones(shown in the selected red) and Yuihime doesn't. Those two bones have been used in a few motions and you will need to add them to any model that doesn't have them for certain motions. Just find a model that does have them and copy the parent tree and IK settings. Moving them into place is super easy since they are just literally exactly under the heel bones down to the floor.
