How come I can't move in the built version of my game?

I decided to try out a build of the game (an FPS) on my PC, and to see what the requirements for the game would be so far. (by using VMWare player)

However, I came across a problem… I can’t move.

The player starts off above the ground, I did this to test the gravity, and I stay in the air!

The mouse and the shooting, but I can’t move and the gravity is non existent.

I’m also getting this error in the log on the bottom-left: “Gamename/Gamename_Data/mainData is corrupted! Remove it and launch unity again! [Position out of bounds! 34308 > 34304]”.

How do I fix this problem?

Also, how can I get rid of the mouse pointer in the game build?

EDIT: The problem seems to be the FPS Input Controller script I have, because all the thing I couldn’t do in the build is handled by this script, here’s the code (It’s in C#):
using UnityEngine;
using System.Collections;

public class FPSInputController : MonoBehaviour {

	public float speed = 100;
	public float jumpSpeed = 0;
	public Vector3 moveDirection =;
	public float gravity = 200;
	public bool grounded = false;
	// Use this for initialization
	void Start () {
	// Update is called once per frame
	void Update () 
		if (grounded)
			moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
			moveDirection = transform.TransformDirection(moveDirection);
			moveDirection*= speed;
		if (grounded)
				moveDirection.y = jumpSpeed;
		moveDirection.y -= gravity * Time.deltaTime;
	    var controller = GetComponent<CharacterController>();
		var flags = controller.Move(moveDirection * Time.deltaTime);
		grounded = (flags & CollisionFlags.CollidedBelow) !=0;

It’s okay, I fixed it, it turns out that a couple of scripts were corrupt, I created new ones, and copied the codes, now they work!

Thanks ExTheSea!