Mattogen

I installed the latest forge (and tried earlier versions) and I keep stumbling upon the same problem. When I'm in third person I can't see my own armor nor the armor of my anyone else. While in first person I can see myself holding blocks/weapons though. I've made like 20 fresh installs of forge (I use the installer) and I've deleted the whole .minecraft and redownloaded the launcher like 3 times, but nothing seems to fix it. The odd thing is that I'm the only one on the server who has this problem, and yes I did try if it was the same situation in singleplayer, and yes I couldn't see my armor etc. EDIT: I forgot to add that forge is the only mod that I am using