Foreach and GetComponentInChildren, getting NullReferenceException

EDIT: after sleeping over this, still no solution and I at this point I think I am probably unlearning what I have so far. I have assigned public components to make sure they're all there and that the game is not missing any. I check it in the inspector. It shows all the public components. All components match what I am expecting. And yet, when I assign a local variable in the script, I just get the null reference all the same. I truly don't get what is going on... :'(

I updated the code as it is now.

First post: Ok, after 3 hours of trying to get a solution, I call it a quit. After so many iterations, I can't even remember what I have tried or not. I have searched for a solution on the internet unsuccessfully. I keep getting a null reference on the below code.

All the code seems to be running well besides the fact that I can't get the script component in the instantiated object child - which is triggered through a OnTriggerEnter code - everything looks good on the inspector.

What is it I'm doing wrong?

 //Instantiates the movement area, and this triggers a lot of colliders throughout, public instances assigned, everything showing up in the inspector. 
         movementArea = Instantiate (movementArea, gm.pawn.transform.position, gm.pawn.transform.rotation);
         MovementTileScript[] capsules;
         capsules = movementArea.GetComponentsInChildren<MovementTileScript> ();
 
         foreach (MovementTileScript capsule in capsules)
         {
             tile = capsule.movementScript.tileScript; // first ERROR occurs RIGHT HERE
             pawn = capsule.movementScript.pawnStats;
 
             if (tile  == null)  //check if there is a tile, first of all. TODO if there isn't, contemplate destroying the capsule.
             {
                 Debug.Log ("Does not exist");
                 continue;
             }
 
             tile.MovementAllowed = true;
 
             if (pawn != null)
             {
                 Debug.Log ("I have to reach this 10 times");
                 if (gm.playerTurn != pawn.playerOwner) // if player is not the owner of the pawn, it can be attacked, and movement can be made here
                 {
                     pawn.CanBeAttacked = true;
                     //tile.MovementAllowed = true;
                     Debug.Log ("I should not have reached this");
                 } 
                 else 
                 {
                     tile.MovementAllowed = false; // if player is the same as the pawn, he simply cannot land a pawn on top of another
                 }
             }
 
         }

Here is the remaining code in regards to the collision trigger:

 public class MovementTileScript : MonoBehaviour {
 
     public GameObject pawn;
     public PawnStats pawnStats;
     public GameObject tile;
     public TileScript tileScript;
     public MovementTileScript movementScript;
 
     private GameManager gm;
 
     void OnTriggerEnter(Collider other)
     {
         gm = GameObject.FindGameObjectWithTag ("GameController").GetComponent<GameManager> ();
         movementScript = GetComponent<MovementTileScript> ();
         //tileScript = other.GetComponent<TileScript> ();
         //pawn = other.GetComponent<PawnStats> ();
 
         if (other.tag == "Tile") 
         {
             this.transform.parent = other.transform;
             tile = other.gameObject;
             tileScript = other.GetComponent<TileScript>();
             tileScript.MovementAllowed = true;
         }
         if (other.tag == "Pawn") 
         {
             other.transform.parent = this.transform;
             pawn = other.gameObject;
             pawnStats = other.GetComponent<PawnStats> ();
         }
     }