Hi there! You are currently browsing as a guest. Why not create an account? Then you get less ads, can thank creators, post feedback, keep a list of your favourites, and more!
Is it showing any error? Did you check if the backfaces are going into the right direction? Do they have any vertex paint? It can be good to check tutorials to see what you might have missed: http://sims4studio.com/thread/826/c...ackage-existing