PHOTON: RidgedBody removed By Unity on instantiate?

MissingReferenceException: The object of type 'Rigidbody' has been destroyed but you are still trying to access it. Your script should either check if it is null or you should not destroy the object.

What? on PhotonNetwork.Instansiate, my objects Apear in the scene without their Ridgidbodies. they are attached to the Game-objects but removed on start, and no code is "removing" it unity removes it on its own.

     private GameObject[] AllPoints;
     private  GameObject Target;
     int index;
 
     public float thrust = 50;
     public float dist; 
 
     public bool TeamOne;
     public bool TeamTwo;
     public Rigidbody RB;
 
     // Use this for initialization
     void Start () {
         
     }
 
     void FixedUpdate(){
         if (PhotonNetwork.isMasterClient == true) {
             
             RB.AddRelativeForce (transform.forward * thrust);
         }
     }
 
 
     // Update is called once per frame
     void Update () {
         if (PhotonNetwork.isMasterClient == true) {
 
     
 
             // If Not Locked On to playue, Randowmly, roam
             if (Target == null) {
                 AllPoints = GameObject.FindGameObjectsWithTag ("RandPoint");
                 index = Random.Range (0, AllPoints.Length);
                 Target = AllPoints [index];
             }
 
             dist = Vector3.Distance (Target.transform.position, transform.position);
 
 
             // Fly Towards Target
             if (Target != null) {
                 transform.rotation = Quaternion.Slerp (transform.rotation, (Quaternion.LookRotation (Target.transform.position - transform.position)), Time.deltaTime * 2);
             }
 
             if (dist < 10) {
                 Target = null;
             }
 
         }
     }
 
 }