NullReferenceException: Object reference not set to an instance of an object

Hello,

I have 16 gameobjects using the same script MotionDetector and each store in the private int “k” the number each object is clicked.

I also have this script

using UnityEngine;
using System.Collections;

public class SodokuPuzzle : MonoBehaviour {

MotionDetector myObjects;

void Start()
{

	myObjects = new MotionDetector[16]; // new array with 16 elements ( 0..15 )
for (int i = 0; i <= 15; i++)
{
    GameObject go = GameObject.Find("B"+ (i+1));
    if (go != null)
		{ Debug.Log("got : "+i);
			myObjects *= go.GetComponent<MotionDetector>();*
  •   	}*
    
  •   else*
    
  •   	Debug.Log("sommething if wrong");*
    
  •   }*
    

}

  • // Update is called once per frame*

  • void Update () {*

  •   if(myObjects[0].k+myObjects[1].k+myObjects[2].k+myObjects[3].k==10) //Check first rows sum is 10*
    
  •   {Debug.Log("first row corect");*
    
  •   }*
    
  •   else*
    
  •   {	*
    
  •   Debug.Log("first row not corect");*
    
  •   }*
    
  • if(myObjects[4].k + myObjects[5].k + myObjects[6].k +myObjects[7].k==10) //Check second rows sum is 10*

  •   {Debug.Log("Second  row corect");*
    
  •   g++;*
    
  •   }*
    
  •   else*
    
  •   {	*
    
  •   Debug.Log("second row not corect");*
    
  •   }*
    
  •   if(myObjects[8].k + myObjects[9].k + myObjects[10].k +myObjects[11].k==10) //Check third rows sum is 10*
    
  •   {Debug.Log("Third  row corect");*
    
  •   g++;*
    
  •   }*
    
  •   else*
    
  •   {	*
    
  •   Debug.Log("Third  row not corect");*
    
  •   }*
    
  • }*

}
It comes up with the error:
NullReferenceException: Object reference not set to an instance of an object
SodokuPuzzle.Update () (at Assets/SodokuPuzzle.cs:65)
If I delete 2 out of the 3 if statements (in the update function) it works fine.
Why would it work for 1 IF statement and not 2 or 3?
Please help.

The error is telling you that one of your references (variables) in line 65 is null. The the following debugging to see what reference is null:

if (myObjects[4] == null)
  Debug.Log("4 is null");
if (myObjects[5] == null)
  Debug.Log("5 is null");
if (myObjects[6] == null)
  Debug.Log("6 is null");
if (myObjects[7] == null)
  Debug.Log("7 is null");

if(myObjects[4].k + myObjects[5].k + myObjects[6].k +myObjects[7].k==10)