Unknown Identifier?

How is that possible? Line: 35 Unknown Identifier “scriptCircles”

// Player Script

// Inspector Variables
var tagName : String;						//allow the designer to setup a tag in the inspector
var rayDistance : float = 0;				//length of the ray for out raycast
var score : int = 0;							//score for our player
var gameTime : float = 5;  				//amount of time the game will last
var loadWaitTime : float = 3.0;
var numberOfPointsToWin : int = 5;	//amount of points needed to win

// Private Variables

// 
function Start()
{
	InvokeRepeating("CountDown", 1.0, 1.0);		// Repeat the countdown every second
}
// Update is called every frame
function Update () 
{
	// use the mouse button to select onGO in the scene
	if (Input.GetMouseButtonDown(0))
	{
		audio.Play();
		var hit : RaycastHit;
		var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);		// get mouse position
		if (Physics.Raycast (ray, hit, rayDistance))
		{
			if (hit.transform.tag == tagName)
			{
				//var position = Vector3 (Random.Range(-6,6),Random.Range(-4,4),0);		// new random position for the gameObject
				//hit.transform.position = position;		// move the gameObject to a random position
				var enemyScript = hit.transform.GetComponent(scriptEnemy);
				enemyScript.numberOfClicks -= 1;
				var circlesScript = hit.transform.GetComponent(scriptCircles);
				circlesScript.numberOfClicks -= 1;
				if(enemyScript.numberOfClicks == 0)
				{
					score += enemyScript.enemyPoints;
				}
				//if(circlesScript.numberOfClicks == 0)
				//{
				//	score += circlesScript.enemyPoints;
				//}
			}
		}
	}
}

function CountDown()
{
	if (--gameTime == 0)		// subtract from gametime
	{
		CancelInvoke("CountDown");		// cancell the countdown
		//yield WaitForSeconds (loadWaitTime);
		if (score >= numberOfPointsToWin)
		{
			Application.LoadLevel ("sceneScreenWin");
		}
		else
		{
			Application.LoadLevel ("sceneScreenLose");
		}
	}
}
//
function OnGUI()
{
	GUI.Label (Rect(10,10,100,20), "Score: " + score);
	GUI.Label (Rect(10,25,100,35), "Time: " + gameTime);
}

Fixed it by rebooting my pc.