Fixing Enemy Spider on Unity 5

Problem:
After importing AngryBots to Unity 5 conversion will break Emeny Spider mechanics. This is solution:
 
Fix EnemySpider by removing active radius.
In the SpiderReturnMoveController
 

#pragma strict



// Public member data

public var motor : MovementMotor;



// Private memeber data

private var ai : AI;



private var character : Transform;

private var spawnPos : Vector3;

public var animationBehaviour : MonoBehaviour;

public var moving : boolean;



function Awake () {



  character = motor.transform;

  ai = transform.parent.GetComponentInChildren.<AI> ();

  spawnPos = character.position;

}



function Update () {

  motor.movementDirection = spawnPos - character.position;

  motor.movementDirection.y = 0;

  if (motor.movementDirection.sqrMagnitude > 1)

  {

    motor.movementDirection = motor.movementDirection.normalized;

    moving=true;

    }

  

  if (motor.movementDirection.sqrMagnitude < 0.01) {

    character.position = new Vector3 (spawnPos.x, character.position.y, spawnPos.z);

    motor.GetComponent.<Rigidbody>().velocity = Vector3.zero;

    motor.GetComponent.<Rigidbody>().angularVelocity = Vector3.zero;

    motor.movementDirection = Vector3.zero;

    enabled = false;

    animationBehaviour.enabled = true;

  }



  if (character == motor.transform && motor.movementDirection.sqrMagnitude < 0.01 && moving==true)

  {

  animationBehaviour.enabled = false;

  moving=false;

  }

  else

  {animationBehaviour.enabled = true;

   moving=true;

  }



}