Can a Mesh Collider collide with a Capsule Collider?

I can get a Sphere Collider to collide with a Capsule Collider but I can't seem to get a Mesh Collider to collide with a Capsule Collider. All colliders have the same Physics Material.

Is there something special that is needed to get a Mesh Collider to collide with a Capsule Collider?

 

check the collision tables:

http://unity3d.com/support/documentation/Components/class-SphereCollider.html

scroll to the very bottom of the page.