Navmeshagents, Character Controllers and Colliders

Hi all,

I've ran into an issue with my First Person type game where I have two 'actors' in a scene.

Actor 1 - An AI with a NavMeshAgent attached that uses a Sphere collider. The Sphere collider is a trigger that takes the transform of an Actor 2 that enters the collider and sets that as the NavMeshAgents destination.

Actor 2 - A player controlled object that has a Character Controller with a movement script that's pretty much based on the script example here: http://docs.unity3d.com/Documentation/ScriptReference/CharacterController.Move.html

Both actors also have a small cylinder meshes as mock models.

The problem I am having is that Actor 1 and Actor 2 can walk through each other, which I don't want. I want them, when they collide, to prevent each other from walking into each others cylinder meshes.

I have tried adding NavMeshAgents to Actor 2 but I find that the NavMeshAgent and Character Controller conflict with each other and the player starts jittering up and down the Y axis. I've also tried adding Rigidbodies to both Actors but the Rigidbody on Actor 1 conflicts with the NavMeshAgent (again) and causes odd behaviour in the movement of the AI.

It feels like I am not following best practices in player controllers and NavMeshAgent as well as setting colliders correctly, so any advice would be great.

Thanks, Mark