m_Instance.GetComponent<object>() returns null or nothing?

Hi!
I am trying to reorganizing and customize my code to use Unitys teaching project 'Tank's overall structure.
GameManager (Main), LevelManager with CoRoutines, EnemyManager, Enemy Movement and Player
(standalone) and some more classes ...
Exchange info between EnemyMovement and Player class.
Game player control the Player class.
Enemies[x] (with EnemyMovement) should trigger on Players position if everything is as planned.

But when I applied my old Enemy class to EnemyManager into EnemyMovement then
I get 'Object reference not set to an instance of an object'.

Could anyone give me some hint?
Thanks in advance!

(This code works in Tanks so something is not ok in my EnemyMovement but what (it's to large to show all code). But it have Start, Update, FixedUpdate and OnTrigger and a lots och metods.)

Code (csharp):

1.  
2. namespace GAME11
3. {
4.     public class LevelManager : MonoBehaviour
5.     {
6.         public EnemyManager[] m_Enemies;        // A collection of enemies for control these objects.
7.         public GameObject m_EnemyPrefab;        // Reference to prefab.
8.         private void SpawnAllEnemies()
9.         {
10.             for (int i = 0; i < m_Enemies.Length; i++)
11.             {
12.                 m_Enemies[i].m_Instance = Instantiate(m_EnemyPrefab, m_Enemies[i].m_SpawnPoint.position, m_Enemies[i].m_SpawnPoint.rotation) as GameObject;
13.                 m_Enemies[i].m_EnemyNumber = i + 1;
14.                 m_Enemies[i].Setup();
15.        ...
16.             }
17.         }
18.         ...
19.     }
20. }        
21.  
22. //In EnemyManager
23.  
24. namespace GAME11
25. {
26.     [Serializable]
27.     public class EnemyManager
28.     {
29.         private EnemyMovement m_Movement;  
30.         [HideInInspector] public int m_EnemyNumber; // This specifies which enemy this manager
31.                            // is for in enemynumber.
32.  
33.         public void Setup()
34.         {
35.             m_Movement = m_Instance.GetComponent<EnemyMovement>();  //problems
36.             try
37.             {
38.                 m_Movement.m_EnemyNumber = m_EnemyNumber;  //error appear (m_Movement == null)
39.             }
40.             catch (Exception e)
41.             {
42.                 HandleTextFile.WriteString("e=" + e.Message);   //message='Object reference not set to an instance of an object'
43.             }
44.         }
45.     }
46. }
47.  
48. namespace GAME11
49. {
50.     public class EnemyMovement : MonoBehaviour
51.     {
52.         public int m_EnemyNumber;   // Used to identify Enemy. This is set by this Enemy's manager.
53.         //code for moving Enemies , communicate via metods in Player and gives Player info about Enemy
54.     }
55. }
56. [end code]

 

Yes, Unity can! When you get that, double-click on the error message. It will take you right to the line with the problem. That line will probably have only one or a very small number of object references on it; just see which one is nil (by adding some Debug.Logs right before that line, if necessary).

 

Thanks for your answer!

In catch (Exception e)

"System.NullReferenceException: Object reference not set to an instance of an object\r\n at GAME11.EnemyManager.Setup () [0x00057] in
C:\\Users\\Lars XXXXXX\\Desktop\\YYYYY game\\Assets\\Scripts\\EnemyManager.cs:38 "

When breakpointing row 38 m_Movement is null it never get any value from m_Instance.GetComponent<EnemyMovement>.

Code (csharp):

1.  
2. m_Movement = m_Instance.GetComponent<EnemyMovement>();  //problems
3. [end code]
4.  
5. Only Player class is active. Could verify that in my tracefile. No activity in EnemyMovement.
6.  
7. Why return GetComponent null or maybe it can't because EnemyMovement have some problem that compiler not could tell.
8. Must work harder with this issue!