CoD4 Weapon Skins

Well I installed player skins, worked perfectly the first time I went on, so I decided to add weapon skins too.

Unfortunately they decided to only show up in single player, and when I start my own server (only me playing). Does anybody know why it does this? halp me :<


EDIT: by the way i'm using a cracked CoD4.

using cracked cod 4 doesnt make it work any different, go on youtube and look on tuts on how to add custom wep skins