Why do I loose my Animator?

When I return to may main scene the animation is missing, when I go back to the Scene where the animation originated it is also missing. The Script has the Don't destroy code on it.

 public class UIManagerScript : MonoBehaviour {
 
 
     public Animator LEDlights;
     public static UIManagerScript uiManagerScr;
 
     void Awake () {
         if (uiManagerScr == null) {
             DontDestroyOnLoad (gameObject);
             uiManagerScr = this;
         } else if (uiManagerScr != this) {
             Destroy (gameObject);
         }
         
     }
 
 
     public void PlayLEDLightsAnimation()
     {
         GetComponent<Animator> ();
         LEDlights.SetBool ("notPlaying", !LEDlights.GetBool ("notPlaying"));
     }
 
     public void  GoSurveillanceModeToggle(){
         //Send to Sending script for message out to Arduino
         Sending.sendBlue ();
     }
 
 
     public void TogglePlay()
     {
         if (GetComponent<AudioSource> ().isPlaying) 
         {
             GetComponent<AudioSource>().Stop();
         }
         else
         {
             GetComponent<AudioSource>().Play();
         }
     }
     
     //Quit Button
     public void  GoQuit(){
         StartCoroutine(LoadQuit("ThreeD_Overview"));
     }
     
     IEnumerator LoadQuit(string levelMain){
         yield return new WaitForSeconds(0.5f); // wait time
         Application.LoadLevel(levelMain);
         
     }
 
 }