Invisible Elves

[seentoray]

I've got a weird issue with elves being invisible when naked. Literally any elve's chest and legs are invisible (I can still see the head, hands, feet and genitals). I've tried a lot of different things like replacing textures and frames but I always have the problem still. This includes Dark Elf and High Elf and any mod that looks similar including the Dremora race mod. 

 

Any seen this before/have a fix?

 

Edit: it is both genders

2nd Edit: I've narrowed down the problem to SoS. I can sometimes get it to work by restarting the mod and restarting the game, but then some characters are still invisible and each time it swaps around.