Error in Build but not in Editor - output_log.txt debug problem

UPDATE : Found what is the line that is causing the issue (updated example).
Still no idea how to fix it…

So I’m executing this function on Update()

var pickUpObjectsInSightList = new List.<Transform>(); //Contains a list of all the objects the current actor can see.

function PickUpObjectsInSight (){
    for(var pickUpObject : Transform in objManager.pickUpObjectList){
    	var objectCenter : Vector3;

    	objectCenter =;

Now when I’m in the editor everything works fine but, when I do a build I start to get errors on the log that change the behaviour. I can’t figure out what the problem is. It’s my first time actually learning about the output_log…

  at (wrapper managed-to-native) UnityEngine.Transform:INTERNAL_get_position (UnityEngine.Vector3&)

  at UnityEngine.Transform.get_position () [0x00000] in <filename unknown>:0 

  at Player_Properties.PickUpObjectsInSight () [0x00000] in <filename unknown>:0 

  at Script_Wife.Update () [0x00000] in <filename unknown>:0 
(Filename:  Line: -1)

Any help very appreciated!

Found the problem. It was totally my fault but I might as well share it here in case other people fall in the same trap.

I had written a piece of code to allow me to remove test object from the release build (if they have a certain flag set as true):

	if (isDebugOnly && !Debug.isDebugBuild){

But this code was written AFTER this other line:

objManager.pickUpObjectList.Add (transform);

Causing it to destroy the object AFTER it was added to the list and ONLY on the actual build!! argh!