Unity crashes on playing in editor and playing after build.

On build it plays a sound and black screens. If I try to play in the editor the entire thing (excluding monodevelop) simply crashes. I have absolutely no idea how to fix this and don't want to re do the entire thing (worked on it for a while). It has a sizable script which just started crashing. Here is the script. #pragma strict

 var pointValue = 1;
 var currentScore : int = 0;
 var cube1 : GameObject;
 var cube2 : GameObject;
 var cube3 : GameObject;
 var cube4 : GameObject;
 var cube5 : GameObject;
 var cube6 : GameObject;
 var cube1a : GameObject;
 var cube2b : GameObject;
 var cube3c : GameObject;
 var cube4d : GameObject;
 var cube5e : GameObject;
 var cube6f : GameObject;
 private var random : int;
 var offsetY : float = 40;
 var sizeX : float = 100;
 var sizeY : float = 40;
 
 function OnGUI () {
     GUI.Box (new Rect (Screen.width/2-sizeX/2, offsetY, sizeX, sizeY), currentScore + " Doritos with your dew");
 }
  
  
 function Update () 
 {
 if (Input.GetKeyDown ("w")) {
 cube1.active = false;
 cube2.active = true;
 cube3.active = false;
 cube4.active = false;
 cube5.active = false;
 cube6.active = false;
 if (cube2b.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } if (Input.GetKeyDown ("q")) {
 cube1.active = true;
 cube2.active = false;
 cube3.active = false;
 cube4.active = false;
 cube5.active = false;
 cube6.active = false;
 if (cube1a.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } if (Input.GetKeyDown ("e")) {
 cube1.active = false;
 cube2.active = false;
 cube3.active = true;
 cube4.active = false;
 cube5.active = false;
 cube6.active = false;
 if (cube3c.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } if (Input.GetKeyDown ("a")) {
 cube1.active = false;
 cube2.active = false;
 cube3.active = false;
 cube4.active = true;
 cube5.active = false;
 cube6.active = false;
 if (cube4d.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } if (Input.GetKeyDown ("s")) {
 cube1.active = false;
 cube2.active = false;
 cube3.active = false;
 cube4.active = false;
 cube5.active = true;
 cube6.active = false;
 if (cube5e.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } if (Input.GetKeyDown ("d")) {
 cube1.active = false;
 cube2.active = false;
 cube3.active = false;
 cube4.active = false;
 cube5.active = false;
 cube6.active = true;
 if (cube6f.active) {
 currentScore += pointValue;
 audio.Play();
 }
 } 
 
 random = Random.Range(0, 6); 
 }
 
 do {
 cube1a.active = true;
 cube2b.active = false;
 cube3c.active = false;
 cube4d.active = false;
 cube5e.active = false;
 cube6f.active = false;
 } while (!(Input.GetKeyUp ("q") || random > 1.1));
 do {
 cube1a.active = false;
 cube2b.active = true;
 cube3c.active = false;
 cube4d.active = false;
 cube5e.active = false;
 cube6f.active = false;
 } while (!(Input.GetKeyUp ("w") || random > 2.1));
 do {
 cube1a.active = false;
 cube2b.active = false;
 cube3c.active = true;
 cube4d.active = false;
 cube5e.active = false;
 cube6f.active = false;
 } while (!(Input.GetKeyUp ("e") || random > 3.1));
 do {
 cube1a.active = false;
 cube2b.active = false;
 cube3c.active = false;
 cube4d.active = true;
 cube5e.active = false;
 cube6f.active = false;
 } while (!(Input.GetKeyUp ("a") || random > 4.1));
 do {
 cube1a.active = false;
 cube2b.active = false;
 cube3c.active = false;
 cube4d.active = false;
 cube5e.active = true;
 cube6f.active = false;
 } while (!(Input.GetKeyUp ("s") || random > 5.1));
 do {
 cube1a.active = false;
 cube2b.active = false;
 cube3c.active = true;
 cube4d.active = false;
 cube5e.active = false;
 cube6f.active = true;
 } while (!(Input.GetKeyUp ("d") || random > 6.1));