SteamVR + Raycasting - nullreference.... not set to instance of object...

Dear all

Using steamVR and find it lacking, so trying to modify the "SteamVR_LaserPointer.CS"
to be able to do remote/pickup grab..

But only a few minuttes in, and i'm hitting a wall.

1. I added the Laser pointer cs from Steamvr extras to the "right hand" on the player..
And it works like a charm, i get raycast targets, get the name etc.

2. I get the error on lines 157 & 160.. That is the two lines where i try to get info from the raycast.

Here is what i added to the script..

the initial stuff

Code (CSharp):

1.  
2. using Valve.VR.InteractionSystem;
3.  

some declarations

Code (CSharp):

1.                
2.         private Hand hand;
3.         public GameObject targetGrab;   // empty, used to store what eventually will be grabbed.
4.         private Interactable interactable;
5.         public float moveToHandSpeed = 5f;
6.  

and the code,, around line 145ish..

Code (CSharp):

1.                
2.  
3.                 Debug.Log("hit - " + hit.collider.gameObject.name);  //  NULL REF ERROR (only sometimes)
4.  
5.                 // TO DO,, LATER, check if object is interactable.... check components..
6.                 targetGrab = hit.collider.gameObject;  //  NULL REF ERROR
7.  
8.                 GrabTypes grabtype = hand.GetGrabStarting();
9.                 bool isGrabEnding = hand.IsGrabEnding(targetGrab);
10.  
11.                 if (interactable.attachedToHand == null && grabtype != GrabTypes.None)
12.                 {
13.                     float step = moveToHandSpeed * Time.deltaTime;
14.                     targetGrab.transform.position = Vector3.MoveTowards(transform.position, targetGrab.transform.position, step);
15.                     hand.AttachObject(targetGrab, grabtype);
16.                 } else if (isGrabEnding)
17.                 {
18.                     hand.DetachObject(targetGrab);
19.                 }

Any ideas? i test on some spheres i created, they can be interacted and used normally in VR.