In unity 3d my Character keeps falling through the terrian.

Ive tested it and found the problems not the terrian or that its not above the colliders. So its got to be something with my character. This scene is only a test so my characters a simple sphere. It has a sphere collider, a character controller, a character motor, and a rigidbody. Ive tried everything i know and nothing works. So if anybody can, please tell me how to fix this.

Hi hope this helps you

if not let me know and il see what i can do :)