C# reference gameObject from script not attached

Hi, I'm new to unity and I'm trying to populate an array of GameObject in a script not attached to an empty gameObject where I've stored some prefabs.

\\\scriptA attached to objA
public class objComp : MonoBehaviour {
public GameObject objectA;
public GameObject objectB;
public GameObject objectC;
public GameObject objectD;
}

In the inspector I've filled the slot of the public GameObject

objectA -> prefabsObjA
objectB -> prefabsObjB
objectC -> prefabsObjC
objectD -> prefabsObjD

\\\scriptB attached to objB
public class attachId : MonoBehaviour {

private GameObject[] arrayPrefabs;

scriptA scriptAscript;

void Start () {

arrayPrefabs = new GameObject[4];

scriptAscript = gameObject.GetComponent<scriptA> ();

arrayPrefabs [0] = scriptAscript.objectA as GameObject;
arrayPrefabs [1] = scriptAscript.objectB as GameObject;
arrayPrefabs [2] = scriptAscript.objectC as GameObject;
arrayPrefabs [3] = scriptAscript.objectD as GameObject;

}

}
and where I try to populate the array I receive the error: NullReferenceException: Object reference not set to an instance of an scriptB.Start ()

Can someone give me some advice ? Thanks in advance.

 

The reason of it is that scriptA variable is not initialised.
If scriptA is not inherited from MonoBehavior class you can initialize it directly with new keyword.

Code (csharp):

1.  
2. scriptA scriptAscript = new scriptA ();
3.  

 

ScriptA is a monobehavior though, so just make sure it is added as a component to the same object as script B.
Edit: or so it seems - I thought scriptA and objComp were the same script at first. ScriptA definitely needs to be instantiated in some manner.

Also please use codetags when you write code

http://forum.unity3d.com/threads/143875-Using-code-tags-properly