Missing skeleton in Weapon Equip System 2.1?

Hello I recently purchased Weapon Equip System 2.1 to possibly learn how to put weapons in a characters hand. Of course I hit a brick wall trying to figure out this simple concept as I asked in a post I wrote a few minutes ago. Anyway, when I create a fresh new project from it (and I have tried this several times) it brings up an error at the very begginging stating “Error The Skeleton HeroFPP_Skeleton is missing bones that SkeletalMesh HeroFPP needs. They will be added now. Please save the Skeleton!” and of course I am stuck there with a non functioning pack. I don’t know if its a faulty pack that past Epic quality control or if I’m doing something very wrong. Any help would be greatly appreciated. Thanks.