The name 'CharacterMotor' does not exist in the current context.

I am receiving the error in the title when I hover the mouse cursor over “CharacterMotor” in the script below:

using UnityEngine;
using System.Collections;

public class MoveAnimation : MonoBehaviour {

	public CharacterMotor motor;

My project does have the Standard Assets → Character Controllers imported into it. If I dig into Character Controllers/Sources/Scripts I can see that the CharacterMotor script is present.

i am having the same error…please help if found solution