SLaVE - Whipping not working... NPC can't sheath or use the whip (gets stuck)

There's a known compatibility issue when using Dual Sheath Redux that will cause this. It is only in certain situations. One user has said don't run Dual Sheath's patcher after installing this mod, do it before, and then it works.

Same when using Ultimate Combat. May be solved if you use the "tktk1's TK Dodge/Ultimate Combat patch" in FNIS. Another possible solution is to run FNIS without Ultimate Combat and then enable it after.