Player odel invisible

I was recently playing Gmod when I realised that my player model is invisible, but only to myself. When I put a camera in it can see everyone in the server but me. When I die, however, my rag doll still appears as per normal.
I tried deleting my Garrysmod folder, thus removing anything I have downloaded in the past, but the problem still remains. Is there anything obvious I am missing here?

Were you in the skybox or something?