MissingComponentException

The ball hits the indestructible bar, it bounces well, and in the counter it should remove a digit from the counter, but instead I get this message.

  

MissingComponentException: There is no 'TextMesh' attached to the   "object" game object, but a script is trying to access it.

Here my code above:

void OnCollisionEnter(Collision cacharro)
{       
    for(toque = 5;toque <= 5; toque++)
    {
        toques.text = toque.ToString();
    }
}

Some charitable soul that explains why it does not work for me.