Random exception error just showed up

For no reason at all i started unity today and got an out of range and exception error on a script that never had an issue before? here's my script and here the error.

ERROR :

 IndexOutOfRangeException: Array index is out of range.
 BaseCharacter.GetVitals (Int32 index) (at Assets/Game Data/Player Data/Scripts/Character Stats/BaseCharacter.cs:85)
 GameSettings.LoadCharacterData () (at Assets/Game Data/Player Data/Scripts/Character Stats/GameSettings.cs:83)
 GameMaster.LoadCharacter () (at Assets/Game Data/Player Data/Scripts/Character Stats/GameMaster.cs:48)
 GameMaster.Start () (at Assets/Game Data/Player Data/Scripts/Character Stats/GameMaster.cs:21)

SCRIPT :

 using UnityEngine;
 using System.Collections;
 using System;
 
 public class BaseCharacter : MonoBehaviour {
     private string _name;
     private int _level;
     private uint _freeExp;
 
     private Attribute[] _primaryAttribute;
     private Vitals[] _vitals;
     private Skills[] _skills;
 
     public void Awake()
     {
         _name = string.Empty;
         _level = 0;
         _freeExp = 0;
 
         _primaryAttribute = new Attribute[Enum.GetValues(typeof(AttributeName)).Length];
         _vitals = new Vitals[Enum.GetValues(typeof(VitalName)).Length];
         _skills = new Skills[Enum.GetValues(typeof(SkillName)).Length];
 
         SetupPrimaryAttributes();
         SetupVitals();
         SetupSkills();
     }
 
 
     public string Name
     {
         get{ return _name;}
         set{ _name = value;}
     }
     public int Level
     {
         get{ return _level;}
         set{ _level = value;}
     }
     public uint FreeExp
     {
         get{ return _freeExp;}
         set{ _freeExp = value;}
     }
     public void AddExp(uint exp)
     {
         _freeExp += exp;
 
         CalculateLevel ();
     }
     public void CalculateLevel()
     {
 
     }
     private void SetupPrimaryAttributes()
     {
         for(int cnt = 0; cnt < _primaryAttribute.Length; cnt++)
         {
             _primaryAttribute[cnt] = new Attribute();
             _primaryAttribute[cnt].Name = ((AttributeName)cnt).ToString();
         }
     }
     private void SetupVitals()
     {
         {
         for(int cnt = 0; cnt < _vitals.Length; cnt++)
             _vitals[cnt] = new Vitals();
         }
         SetupVitalModifiers();
     }
     private void SetupSkills()
     {
         {
         for(int cnt = 0; cnt < _skills.Length; cnt++)
         _skills[cnt] = new Skills();
         }
         SetupSkillModifiers();
     }
     public Attribute GetPrimaryAttributes(int index)
     {
         return _primaryAttribute[index];
     }
     public Vitals GetVitals(int index)
     {
         return _vitals[index];
     }
     public Skills GetSkills(int index)
     {
         return _skills[index];
     }
 
 
     private void SetupVitalModifiers()
     {
         //health
         GetVitals((int)VitalName.Health).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Stamina), 10f));
         GetVitals((int)VitalName.Health).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Endurance), 2f));
         GetVitals((int)VitalName.Health).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Agility), .5f));
         GetVitals((int)VitalName.Health).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Dexterity), .25f));
 
         //power
         GetVitals((int)VitalName.Power).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Intelligence), 10f));
         GetVitals((int)VitalName.Power).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Wisdom), 2f));
         GetVitals((int)VitalName.Power).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Charisma), 2f));
     }
     private void SetupSkillModifiers()
     {
         //melee
         GetSkills((int)SkillName.Melee_Damage).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Strength), 2f));
         GetSkills((int)SkillName.Melee_Defense).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Endurance), 1f));
         GetSkills((int)SkillName.Melee_Defense).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Stamina), 1f));
 
         //magic
         GetSkills((int)SkillName.Magic_Damage).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Wisdom), 3f));
         GetSkills((int)SkillName.Magic_Defense).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Intelligence), 1.5f));
 
         //ranged
         GetSkills((int)SkillName.Ranged_Damage).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Dexterity), 4f));
         GetSkills((int)SkillName.Ranged_Defense).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Agility), 2.25f));
 
         //healing
         GetSkills((int)SkillName.Healing).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Charisma), 3.5f));
         GetSkills((int)SkillName.Healing).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Intelligence),1.5f));
         GetSkills((int)SkillName.Healing).AddModifier(new ModifyingAttribute(GetPrimaryAttributes((int)AttributeName.Wisdom), .5f));
     }
         public void StatUpdate()
         {
             for(int cnt = 0; cnt < _vitals.Length; cnt++)
                 _vitals[cnt].Update ();
             for(int cnt = 0; cnt < _skills.Length; cnt++)
                 _skills[cnt].Update ();
         }
 }

Any ideas? Thanks in advance!