Tail physics not working

[bernt92]

Hi! So I downloaded this mod from the nexus: https://www.nexusmods.com/skyrim/mods/89747?tab=files. The mod says that in order to have physics on the HDT-PE tail, you need to have a working HDT-pe setup in your game. I have one that has worked before , but for some reason, the HDT-PE tail won't attach to it making the tail stiff and with no physics at all. I have checked nifskope and the tail is set up with the correct HDT Havok Path which is Data\SKSE\Plugins\HDTTail.xml and Data\SKSE\Plugins\floor.xml. The xml's comes from this mod: https://www.nexusmods.com/skyrim/mods/55848 It's not the best one regarding physics, but I have made it work before. After I reinstalled my whole Mod organizer, and used the same esp and did not change anything within the first mod, the fluffy khajiit mod, the physics no longer work. 

 

Anyone who has an idea of how to make it work or what has gone wrong? Which steps should one take to make a tail have physics? and I mean HDT-PE since that's what I'm still using. 

Any help appreciated!