NullReference Exception Help

I have a script applied to a box where once I approach it and press “E”, I will hide inside. And by pressing E again, I will get out. When I press “E” I get an error that quotesNullReferenceException: Object reference not set to an instance of an object. Please help? My “Hide” script is below.

#pragma strict

var mainCamera : Camera;
var hidingCamera : Camera;

private var guiShow : boolean = false;

var isHiding : boolean = false;

var rayLength = 10;

function Start()
{
mainCamera.GetComponent.().enabled = true;
hidingCamera.GetComponent.().enabled = false;
}

function Update()
{
var hit : RaycastHit;
var fwd = transform.TransformDirection(Vector3.forward);

if(Physics.Raycast(transform.position, fwd, hit, rayLength))
{
	if(hit.collider.gameObject.tag == "Hide" && isHiding == false)
	{
		guiShow = true;
		if(Input.GetKeyDown("e"))
		{
			//Disable Player
			GameObject.Find("First Person Controller").GetComponent(CharacterController).enabled = false;
			GameObject.Find("Graphics").GetComponent(MeshRenderer).enabled = false;
			
			//Cameras
			mainCamera.GetComponent.<Camera>().enabled = false;
			hidingCamera.GetComponent.<Camera>().enabled = true;
			
			//Booleans
			Wait();
		}
	}
}

else
{
	guiShow = false;
}

if(isHiding == true)
{
	if(Input.GetKeyDown("e"))
	{
		//Disable Player
		GameObject.Find("First Person Controller").GetComponent(CharacterController).enabled = true;
		GameObject.Find("Graphics").GetComponent(MeshRenderer).enabled = true;
			
		//Cameras
		mainCamera.GetComponent.<Camera>().enabled = true;
		hidingCamera.GetComponent.<Camera>().enabled = false;
			
		//Booleans
		isHiding = false;
	}
}

}

function Wait()
{
yield WaitForSeconds(0.5);
isHiding = true;
guiShow = false;
}

function OnGUI()
{
if(guiShow == true)
{
GUI.Box(Rect(Screen.width / 2, Screen.height / 2, 100, 25), “Hide inside?”);
}
}

GameObject.Find(“First Person Controller”).GetComponent(CharacterController).enabled = true;
GameObject.Find(“Graphics”).GetComponent(MeshRenderer).enabled = true;

is the line of code that is having the problem.
@SpaceManDan I tried adding that and it gave me 12 errors. Simple errors though, like inserting semicolons although they are already there and it still wont fix.