Erro no Script- "The script needs to derived from MonoBehavior"

Código:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using EVP;
///NOTES
/// Set this object tag to Usable, ensure Vehicle Camera is not tagged as MainCamera
///
namespace RedHawk
{
   public class HelicopterInteractRFPS : MonoBehaviour {

      #region Variables - Edy's
      ControlPanel m_ControlPanel;
      FollowTargetCamera m_FollowTargetCamera;
      HeliRotorController m_HelicopterController;
      Transform m_Target;
      #endregion
      [Tooltip("Ensure your Vehicle Camera is untagged.  If it is tagged as MainCamera, RFPS will not work properly.")]
      public GameObject vehicleCamera = null;
      [Tooltip("Vehicle Child Game Object which represents the position the player will exit at.  If omitted, one will be automatically created.")]
      public GameObject exitPosition = null;
      bool inVehicle=false;
      #region Variables - RFPS
      private FPSPlayer FPSPlayerComponent;
      GameObject m_Body = null;
      bool m_BodyVisible = false;
      GameObject m_MainCamera = null;
      GameObject m_WeaponCamera = null;
      GameObject m_WeaponObj = null;
      #endregion
      void Awake(){
         //Camera Checks and initial setup due to RFPS
         Camera tmpCam = null;
         if (vehicleCamera.GetComponentInChildren<Camera> (true) != null)
            tmpCam = vehicleCamera.GetComponentInChildren<Camera> (true);
         if (tmpCam == null)
            Debug.Log ("The Vehicle Camera was not found.  Please add one!", gameObject);
         if (tmpCam.tag == "MainCamera") {
            Debug.Log ("The Vehicle Camera is set to MainCamera.  This needs to be changed for RFPS", vehicleCamera);
            vehicleCamera.SetActive (false);
            this.enabled = false;
         }
         vehicleCamera.GetComponentInChildren<Camera> (true).enabled = false;
         vehicleCamera.GetComponentInChildren<AudioListener> (true).enabled = false;
         if (this.tag != "Usable") {
            Debug.Log ("The tag of this object should be set to Usable to work with RFPS", this);
            this.enabled = false;
         }
         m_MainCamera = Camera.main.gameObject;
         m_WeaponCamera = m_MainCamera.transform.GetComponentInParent<ReconfigurePrefab> ().WeaponCamera;
         m_WeaponObj = m_MainCamera.transform.GetComponentInParent<ReconfigurePrefab> ().WeaponObj;
      }
      public virtual void Start(){

         //Components on EVP Parent Vehicle
         m_ControlPanel = this.GetComponentInParent<ControlPanel>();
         m_ControlPanel.enabled = false;
         m_HelicopterController = this.GetComponentInParent<HeliRotorController> ();
         m_Target = m_HelicopterController.transform;
         //Components on EVP Camera
         m_FollowTargetCamera = vehicleCamera.GetComponentInParent<FollowTargetCamera> ();
         if (m_FollowTargetCamera == null)
            Debug.Log ("Add a VehicleCameraController to the vehicle camera!", vehicleCamera);
         m_FollowTargetCamera.enabled = false;
         //Exit Position
         if(exitPosition == null){
            exitPosition = new GameObject("ExitPosition");
            exitPosition.transform.SetParent(m_Target);
            exitPosition.transform.localPosition = new Vector3(-1f, 0f, 0f);
            exitPosition.transform.localRotation = Quaternion.identity;
         }
         //RFPS
         FPSPlayerComponent = m_MainCamera.GetComponent<CameraControl> ().playerObj.GetComponent<FPSPlayer> ();
         if (FPSPlayerComponent.gameObject.GetComponent<FPSRigidBodyWalker> ().PlayerCharacterObj != null)
            m_Body = FPSPlayerComponent.gameObject.GetComponent<FPSRigidBodyWalker> ().PlayerCharacterObj;
         if (m_Body != null)
            m_BodyVisible = FPSPlayerComponent.gameObject.GetComponent<FPSRigidBodyWalker> ().PlayerCharacterComponent;

      }
      void FixedUpdate()
      {
         if (inVehicle) {
            if (Input.GetButtonDown ("Use"))
               ExitVehicle ();
         }
      }
      //RFPS Called Action for Usable Objects - see FPSPlayer
      public virtual void ActivateObject()
      {
         //Debug.Log ("We've Been Activated");
         EnterVehicle ();
         inVehicle = true;
      }

      //Enter Vehicle
      public virtual void EnterVehicle()
      {
         //Debug.Log ("We Entered Vehicle!");
         //RFPS Player
         FPSPlayerComponent.gameObject.SetActive(true);
         FPSPlayerComponent.transform.SetParent (m_Target);
         FPSPlayerComponent.transform.position = m_Target.position;
         if (m_BodyVisible) { //If DisplayVisibleBody is true, then handle the body
            m_Body.gameObject.SetActive (false);
            m_Body.transform.SetParent (m_Target);
            m_Body.transform.position = m_Target.position;
         }
         //RFPS Camera
         m_MainCamera.GetComponent<AudioListener> ().enabled = false;
         m_MainCamera.GetComponent<Camera>().enabled = false;
         m_WeaponCamera.GetComponent<Camera> ().enabled = false;
         m_WeaponObj.SetActive (false);
         //Vehicle Camera
         vehicleCamera.GetComponentInChildren<Camera> (true).enabled = true;
         vehicleCamera.GetComponentInChildren<AudioListener> (true).enabled = true;
         //EDYS
         m_ControlPanel.enabled = true;
         m_FollowTargetCamera.enabled = true;
      //   UpdateEVPCameraSettings ();
      }

      //Exit Vehicle
      public virtual void ExitVehicle()
      {
         //Debug.Log ("We Exited Vehicle!");
         inVehicle = false;
         //RFPS Player
         FPSPlayerComponent.transform.parent = null;
         FPSPlayerComponent.transform.position = exitPosition.transform.position;
         FPSPlayerComponent.transform.rotation = exitPosition.transform.rotation;
         FPSPlayerComponent.gameObject.SetActive(true);
         if (m_BodyVisible) { //If DisplayVisibleBody is true, then handle the body
            m_Body.transform.parent = null;
            m_Body.transform.position = exitPosition.transform.position;
            m_Body.transform.rotation = exitPosition.transform.rotation;
            m_Body.gameObject.SetActive (true);
         }
         //RFPS Camera
         m_MainCamera.GetComponent<Camera>().enabled = true;
         m_MainCamera.GetComponent<AudioListener> ().enabled = true;
         m_WeaponObj.SetActive (true);
         m_WeaponCamera.GetComponent<Camera> ().enabled = true;
         //Vehicle Camera
         vehicleCamera.GetComponentInChildren<Camera> (true).enabled = false;
         vehicleCamera.GetComponentInChildren<AudioListener> (true).enabled = false;
         //EDYS
         m_ControlPanel.enabled = false;
         m_FollowTargetCamera.enabled = false;
      }
      //User EVP Functionality
   /*   void UpdateEVPCameraSettings()
      {
         m_FollowTargetCamera.PositionFolowForce = m_Target;
         m_FollowTargetCamera.camera;
      } */
   }
}

MarcosSchultz escreveu:Ta usando versão pirata do asset EDY Vehicle Physics?

O que está tentando fazer com esse código da camera exatamente?