my code got broken

Unity Engine
1

Hello today i reinstalled my Computer and when it was done i took my project over to my computer at the desktop same place as before but when i start unity and debuged i got this error

NullReferenceException: Object reference not set to an instance of an object
CharacterGenerator.DisplayName () (at Assets/Scripts/CharacterClasses/CharacterGenerator.cs:70)
CharacterGenerator.OnGUI () (at Assets/Scripts/CharacterClasses/CharacterGenerator.cs:55)

And 

NullReferenceException: Object reference not set to an instance of an object
CharacterGenerator.Start () (at Assets/Scripts/CharacterClasses/CharacterGenerator.cs:41)

So i dont know how to fix this my the main code is

using UnityEngine;
using System.Collections;
using System;

public class CharacterGenerator : MonoBehaviour {
	private PlayerCharacter _toon;
	private const int STARTING_POINTS = 350;
	private const int MIN_STARTING_ATTRIBUTE_VALUE = 10;
	private const int STARTING_VALUE = 50;
	private int PointsLeft;
	
	
	private const int OFFSET = 5;
	private const int LINE_HIGHT = 20;

	
	private const int STAT_LABLE_WIDTH = 100;
	private const int BASEVALUE_LABLE_WIDTH = 30;
	private const int BUTTON_WIDTH = 20;
	private const int BUTTON_HIGTH = 20;
	
	private int statStartingPos = 40;
	
	public GUISkin mySkin;
	
	public GameObject playerPrefab;
	
	// Use this for initialization
	void Start () {
		GameObject pc = Instantiate(playerPrefab, Vector3.zero, Quaternion.identity)as GameObject;
		
		
		pc.name = "pc";
		

		_toon = pc.GetComponent<PlayerCharacter>();
		
		PointsLeft = STARTING_POINTS;
		
	for(int cnt = 0; cnt < Enum.GetValues(typeof(AttributeName)).Length; cnt++) {
			_toon.GetPrimaryAttribute(cnt).BaseValue = STARTING_VALUE;
			//_toon.GetPrimaryAttribute(cnt).BaseValue = STARTING_VALUE;
			PointsLeft -= (STARTING_VALUE - MIN_STARTING_ATTRIBUTE_VALUE);
		}
			_toon.StatUpdate();
	}
	
	// Update is called once per frame
	void Update () {

	}
	
	void OnGUI() {
		GUI.skin = mySkin;
		DisplayName();
		DisplayPointsLeft();
		DisplayAttributes();
		DisplayVitals();
		DisplaySkills();
		
		if(_toon.Name  == "" || PointsLeft > 0 ) 
		DisplayCreateLabel();
			else
		DisplayCreateButton();

	}
	
	private void DisplayName(){
		GUI.Label(new Rect(10, 10, 50, 25), "Name:");
		_toon.Name = GUI.TextField(new Rect(65, 10 , 100, 25), _toon.Name);
		
	}
	
	private void DisplayAttributes() {
			for(int cnt = 0; cnt < Enum.GetValues(typeof(AttributeName)).Length; cnt++) {
			GUI.Label(new Rect(OFFSET, statStartingPos + (cnt * LINE_HIGHT), STAT_LABLE_WIDTH, LINE_HIGHT), ((AttributeName)cnt).ToString() );
			GUI.Label(new Rect(STAT_LABLE_WIDTH + OFFSET, statStartingPos + (cnt * LINE_HIGHT), BASEVALUE_LABLE_WIDTH, LINE_HIGHT), _toon.GetPrimaryAttribute(cnt).AdjustedBaseValue.ToString());

			if(GUI.Button (new Rect(OFFSET + STAT_LABLE_WIDTH + BASEVALUE_LABLE_WIDTH + BUTTON_WIDTH, statStartingPos + (cnt * BUTTON_HIGTH), BUTTON_WIDTH, BUTTON_HIGTH), "+")) {
				if(PointsLeft > 0) {
					_toon.GetPrimaryAttribute(cnt).BaseValue++;
					PointsLeft--;	
					_toon.StatUpdate();
			}
		}
			if(GUI.Button (new Rect(OFFSET + STAT_LABLE_WIDTH + BASEVALUE_LABLE_WIDTH, statStartingPos + (cnt * BUTTON_HIGTH), BUTTON_WIDTH, BUTTON_HIGTH), "-")) {
				if(_toon.GetPrimaryAttribute(cnt).BaseValue > MIN_STARTING_ATTRIBUTE_VALUE) {
					_toon.GetPrimaryAttribute(cnt).BaseValue--;
					PointsLeft++;
					_toon.StatUpdate();
			}
		}
	}
}
	private void DisplayVitals() {
			for(int cnt = 0; cnt < Enum.GetValues(typeof(VitalName)).Length; cnt++) {
			GUI.Label(new Rect(OFFSET, statStartingPos + ((cnt + 7) * LINE_HIGHT), 100, LINE_HIGHT), ((VitalName)cnt).ToString());
			GUI.Label(new Rect(OFFSET + STAT_LABLE_WIDTH, statStartingPos + ((cnt + 7) * LINE_HIGHT), BASEVALUE_LABLE_WIDTH, LINE_HIGHT), _toon.GetVital(cnt).AdjustedBaseValue.ToString());	
		}
}
	
	private void DisplaySkills() {
			for(int cnt = 0; cnt < Enum.GetValues(typeof(SkillName)).Length; cnt++) {
			GUI.Label(new Rect(OFFSET + STAT_LABLE_WIDTH + BASEVALUE_LABLE_WIDTH + BUTTON_WIDTH * 2 + OFFSET * 2, statStartingPos + (cnt * LINE_HIGHT), STAT_LABLE_WIDTH, LINE_HIGHT), ((SkillName)cnt).ToString());
			GUI.Label(new Rect(OFFSET + STAT_LABLE_WIDTH + BASEVALUE_LABLE_WIDTH + BUTTON_WIDTH * 2 + OFFSET * 2 + STAT_LABLE_WIDTH, statStartingPos + (cnt * LINE_HIGHT), BASEVALUE_LABLE_WIDTH, LINE_HIGHT), _toon.GetSkill(cnt).AdjustedBaseValue.ToString());	
		}		
	}
	
	private void DisplayPointsLeft(){
		GUI.Label(new Rect(250, 10, 100, 25), "Points Left: " + PointsLeft.ToString());
	}
	
	private void DisplayCreateLabel() {
		GUI.Label (new Rect(Screen.width/2 - 50, statStartingPos + (10 * LINE_HIGHT), 100, LINE_HIGHT), "Creating...", "Button");
	}
	private void DisplayCreateButton() {
		if(GUI.Button (new Rect(Screen.width/2 - 50, statStartingPos + (10 * LINE_HIGHT), 100, LINE_HIGHT), "Create")){
			GameSettings gsScript = GameObject.Find("__GameSettings").GetComponent<GameSettings>();

			//Change The Cur Value of the vital to the max modified value of that vital
			UpdateCurVitalValues();
			
		
			gsScript.SaveCharacterData();
		
			Application.LoadLevel("Level1");
		}
	}
	private void UpdateCurVitalValues(){
		for(int cnt = 0; cnt < Enum.GetValues(typeof(VitalName)).Length; cnt++) {
			_toon.GetVital(cnt).CurValue = _toon.GetVital(cnt).AdjustedBaseValue;
		}

	}
}
2

bump

3

Did you set these to something in the Editor?

public GUISkin mySkin;
public GameObject playerPrefab;