Why do my triggers not work when I build my game?

For some reason my game works fine in unity but when I build it and run it outside of the program it no longer works. I am using box colliders to make my game objects dissapear. My player has a box collider which is set as a trigger and my objects have a box collider that is not set as a trigger. As soon as I build my game the gameobjects stop my player from moving through them and they no long dissapear. Please help.