HELP,Watched tutorial https://www.youtube.com/watch?v=Xnyb2f6Qqzg

I watched the tutorial live training for 2d character controller Live Training 16 Dec 2013 - 2D Character Controllers - YouTube
And i have troubles with vspeed
It had stuck every time when i jump in 6 number
My charater have Apply Root Motion
Update Mode : normal
Culling Mode : Always Animate

I am adding the video to help you understand what i mean)

using UnityEngine; using System.Collections;

public class PlayerControllerScript : MonoBehaviour {
public float maxSpeed = 10f;
bool facingRight = true;

Animator Anim;

bool grounded = false;
public Transform groundCheck;
float groundRadius = 0.2f;
public LayerMask whatIsGround;
public float jumpForce = 125f;

void Start () {

	Anim = GetComponent<Animator> ();
}

void FixedUpdate () 
{
	grounded = Physics2D.OverlapCircle (groundCheck.position, groundRadius, whatIsGround);

	Anim.SetBool ("Ground", grounded);

	Anim.SetFloat ("vSpeed", GetComponent<Rigidbody2D>().velocity.y);

	float move = Input.GetAxis ("Horizontal");

	Anim.SetFloat ("Speed", Mathf.Abs (move));

	GetComponent<Rigidbody2D>().velocity = new Vector2 (move * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);

	if (move > 0 &&!facingRight)
		Flip ();
	else if (move < 0 && facingRight)
		Flip ();
}

void Update()
{
	if(grounded && Input.GetKey ("space")) 

	{
		Anim.SetBool("Ground", false);
		GetComponent<Rigidbody2D>().AddForce(new Vector2(0, jumpForce));

	}

}

void Flip()
{
	facingRight = !facingRight;
	Vector3 theScale = transform.localScale;
	theScale.x *= -1;
	transform.localScale = theScale;

}

}

you forgot to set ground check in the inspector