...Wait I don't see Fmanemat what does it look like/say?
Hey, Luv!
By following Sigyrn instructions, you need to go to Feral Heart > Media > Materials. The FmaneMat is located in the fmain file
I don't think you will see a FmaneMat2 there, which is why Sigyrn gave you a replaceable version hence the naming it FmaneMat2 (but don't put the actual 2 inside). My mistake - there is actually two!
Once you replaced both (Sigyrn provided the replacements above), let us know if it worked :3