FPS1 1.3 Basic Walking/Running problem

Did everything the instructions told me to, except for the Player Movement Script I got from here:
http://forum.unity3d.com/threads/115330-ETeeskiTutorials-Scripts-up-to-FPS1.16

This is my full script:

var walkAcceleration : float = 5;

var walkAccelAirRacio : float = 0.1;

var walkDeacceleration : float = 5;

@HideInInspector

var walkDeaccelerationVolx : float;

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var walkDeaccelerationVolz : float;



var cameraObject : GameObject;

var maxWalkSpeed : float = 20;

@HideInInspector

var horizontalMovement : Vector2;



var jumpVelocity : float = 20;

@HideInInspector

var grounded : boolean = false;

var maxSlope : float = 60;



function LateUpdate ()

{

horizontalMovement = Vector2(rigidbody.velocity.x, rigidbody.velocity.z);

if (horizontalMovement.magnitude > maxWalkSpeed)

{

horizontalMovement = horizontalMovement.normalized;

horizontalMovement *= maxWalkSpeed;

}

rigidbody.velocity.x = horizontalMovement.x;

rigidbody.velocity.z = horizontalMovement.y;



if (grounded){

rigidbody.velocity.x = Mathf.SmoothDamp(rigidbody.velocity.x, 0, walkDeaccelerationVolx, walkDeacceleration);

rigidbody.velocity.z = Mathf.SmoothDamp(rigidbody.velocity.z, 0, walkDeaccelerationVolz, walkDeacceleration);}



transform.rotation = Quaternion.Euler(0, cameraObject.GetComponent(MouseLookScript).currentYRotation, 0);



if (grounded)

rigidbody.AddRelativeForce(Input.GetAxis("Horizontal") * walkAcceleration * Time.deltaTime, 0, Input.GetAxis("Vertical") * walkAcceleration * Time.deltaTime);

else

rigidbody.AddRelativeForce(Input.GetAxis("Horizontal") * walkAcceleration * walkAccelAirRacio * Time.deltaTime, 0, Input.GetAxis("Vertical") * walkAcceleration * walkAccelAirRacio * Time.deltaTime);



if (Input.GetButtonDown("Jump") grounded)

rigidbody.AddForce(0,jumpVelocity,0);

}



function OnCollisionStay (collision : Collision)

{

for (var contact : ContactPoint in collision.contacts)

{

if (Vector3.Angle(contact.normal, Vector3.up) < maxSlope)

grounded = true;

}

}



function OnCollisionExit ()

{

grounded = false;

}




When I try and move, nothing works. I looked at the inspector and it says that I was moving REEEEALLY slowly. Please, help.

 

Increase the acceleration.
Alot.