CAN SOMEONE FINALLY HELP ME!

I have asked A LOT of people, but no one can seem to help. I am sooo stuck it hurts my head, so please help me here. I need to fix my object reference not set to an instance of an object code... Here is one code( the (>) is where the problem shows):

     private void SetupSkillModifiers() {
        //Melee Offence
        ModifyingAttribute MeleeOffenceModifier1 = new ModifyingAttribute();
        ModifyingAttribute MeleeOffenceModifier2 = new ModifyingAttribute();
 
        MeleeOffenceModifier1.attribute = GetPrimaryAttribute((int)AttributeName.Might);
        MeleeOffenceModifier1.ratio = .33f;
 
        MeleeOffenceModifier2.attribute = GetPrimaryAttribute((int)AttributeName.Nimbleness);
        MeleeOffenceModifier2.ratio = .33f;
 
        (>)GetSkill((int)SkillName.Melee_Offence).AddModifier(MeleeOffenceModifier1);
        GetSkill((int)SkillName.Melee_Offence).AddModifier(MeleeOffenceModifier2);

as well as this section:

     private void DisplaySkills() {
         for(int cnt = 0; cnt < Enum.GetValues(typeof(SkillName)).Length; cnt++) {
             GUI.Label(new Rect(250, 40 + (cnt * 25), 100, 25), ((SkillName)cnt).ToString());
             GUI.Label(new Rect(355, 40 + (cnt * 25), 30, 25), _toon.GetSkill(cnt).AdjustedBaseValue.ToString());
         }

I think this code might be the source of the problem I am having:

 using UnityEngine;
 using System.Collections;
 using System;          //added to access Enum Class
 
 public class BaseCharacter : MonoBehaviour {
     private string _name;
     private int _level;
     private uint _freeExp;
 
     private Attribute[] _primaryAttribute;
     private Vital[] _vital;
     private Skill[] _skill;
 
     public void Awake() {
        _name = string.Empty;
        _level = 0;
        _freeExp = 0;
 
        _primaryAttribute = new Attribute[Enum.GetValues(typeof(AttributeName)).Length];
        _vital = new Vital[Enum.GetValues(typeof(VitalName)).Length];
        _skill = new Skill[Enum.GetValues(typeof(SkillName)).Length];

And Finally I added this code, which holds the SkillName variable. I believe it has some part in the problem. So heres the code:

 public class Skill : ModifiedStat {
     private bool _known;
 
     public Skill() {
        _known = false;
        ExpToLevel = 25;
        LevelModifier = 1.15f;
     }
 
     public bool Known {
        get{ return _known; }
        set{ _known = value; }
     }
 }
 
 public enum SkillName {
     Melee_Offence,
     Melee_Defence,
     Ranged_Offence,
     Ranged_Defence,
     Magic_Offence,
     Magic_Defence
 }

I hope all of these codes will help you guys help me... So if you don't think this is enough I have other codes that might help. ;)