UCE0001 Problem

Hello, I am going through a tutorial on the player control and
I am lost on what I have done wrong.

Tutorial
http://cgcookie.com/unity/lessons/3-scripting-the-player-controller/

Thanks in Advance!

#pragma strict

var bottomThruster : ParticleEmitter;
var topThruster : ParticleEmitter; 
var leftThruster : ParticleEmitter; 
var rightThruster : ParticleEmitter;


function Start(){

}

function Update()
{
	if(Input.GetAxis("Horizontal") > 0) //Checking for right arrow key	{
	{
		Rigidbody.AddForce (10,0,0);
	}
	if(Input.GetAxis("Horizontal") < 0) //Checking for left arrow key
	{
		Rigidbody.AddForce (-10,0,0);
	}
	if(Input.GetAxis("Horizontal") == 0) //Checking if no horizontal key down	
	{
	}
	if(Input.GetAxis("Vertical") >0) //Checking for up arrow key
	{
		Rigidbody.AddForce (0,10,0);
	}
	if(Input.GetAxis("Vertical") <0) //Checking for down arrow key
	{
		Rigidbody.AddForce (0,-10,0);
	{
	}
	if(Input.GetAxis("Vertical") == 0) //Checking if no vertical key down	
	}
}

This is how your code is (starting at line 30):

   if(Input.GetAxis("Vertical") <0) //Checking for down arrow key
    {
       Rigidbody.AddForce (0,-10,0);
    {
    }
    if(Input.GetAxis("Vertical") == 0) //Checking if no vertical key down  
    }
}

This is how your code should be instead:

if(Input.GetAxis("Vertical") <0) //Checking for down arrow key
    {
       Rigidbody.AddForce (0,-10,0);
    {
    if(Input.GetAxis("Vertical") == 0) //Checking if no vertical key down  
    {

    }

}

If you notice in your original code you had unmatching curly brackets.