Unity does not update frames by rotating the character with the movement of the mouse

My Unity is not giving error, or anything. Everything is OK, but the character does not move.
I already looked at the code and no mistake, I move the mouse and nothing happens to the character. The Unity version is 4.6 and the code is this:

public class PlayerMovement : MonoBehaviour
{
   public float speed = 6f;
   Vector3 movement;
   Animator anim;
   Rigidbody playerRigidbody;
   int floorMask;
   float camRayLenght = 100f;

   void Awake(){
      floorMask = LayerMask.GetMask ("Floor");
      anim = GetComponent<Animator> ();
      playerRigidbody = GetComponent<Rigidbody>();
   }

   void FixUpdate(){
      float h = Input.GetAxisRaw ("Horizontal");
      float v = Input.GetAxisRaw ("Vertical");
      Move (h, v);
      Turning ();
      Animating (h, v);
   }

   void Move(float h,float v){
      //tertemina o movimento
      movement.Set(h,0f,v);
      //normaliza o movimento
      movement = movement.normalized * speed * Time.deltaTime;
      // efetua o movimento
      playerRigidbody.MovePosition (transform.position + movement);
   }

   //girar o jogador
   void Turning(){
      Ray camRay = Camera.main.ScreenPointToRay (Input.mousePosition);
      RaycastHit floorHit;

      if (Physics.Raycast (camRay, out floorHit, camRayLenght, floorMask)) {

          Vector3 playerToMouse=floorHit.point-transform.position;
          playerToMouse.y=0f;
          // rotaçao do personagem
          Quaternion newRotation= Quaternion.LookRotation(playerToMouse);
          playerRigidbody.MoveRotation(newRotation);
      }
   }

   void Animating(float h,float v){
      bool walking = h != 0f || v!=0f;
      anim.SetBool ("IsWalking", walking);
   }
}