NullReferenceException: Object reference not set to an instance of an object at QuitGameScript.OnMouseEnter () [0x00000

Questions & Answers
1

var levelToLoad : String;
var beep : AudioClip;
var QuitButton : boolean = true;

function OnMouseEnter() 
{
audio.PlayOneShot(beep);
renderer.material.color = Color.green;
}

function OnMouseExit()
{ 
renderer.material.color = Color.white;
}

function OnMouseUp()
{ 
if (QuitButton){ Application.Quit(); } 
else{ Application.LoadLevel("levelToL­oad"); }
}
2

Based on your code I would assume that audio is returning null or renderer is returning null. audio assumes you have an audiosource attached to this gameObject. renderer assume either a mesh renderer or skinned mesh renderer. Are you sure these components are attached?