UI Prefab not instantiating on build for Android.

I made a UI list instantiate for weapon upgrades. It works fine when running it in the editor but when I build it and try to run it in Android nothing pops up. While looking up what happens in logcat this error pops up:

I/Unity: NullReferenceException: Object reference not set to an instance of an object at CreateScrollList.PopulateList () [0x00000] in :0 at CreateScrollList.Start () [0x00000] in :0 (Filename: Line: -1)

What doesn't Make sense to me is that this if the object wasn't set to a reference wouldn't I get an error in the editor?

Here is what the scripts look like:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.UI;
 using UnityEngine;
 
 
 public class CreateScrollList : MonoBehaviour {
     public GameObject upgradePanelPrefab;
     public Transform contentPanelFist;
     public Transform contentPanelSword;
     public Transform contentPanelHammer;
     public Transform contentPanelCannon;
     public ShopGUICounter _ShopCounter;
 
     public Text infoText;
 
 
 
 
     private void Start(){
         Debug.Log ("Marker 0");
 
         PopulateList ();
     }
 
 
     private void PopulateList(){
         Debug.Log ("Marker 1");
         //Runs through all weapons in weapon info array
         for(int i = 0; i < GameControl.control.WeaponInfo.Length; i++){
             //Debug.Log (GameControl.control.WeaponInfo[i].weaponName);
             //Runs through all weapon data looking for a  match
             for(int n  = 0; n < GameControl.control.CurrentWeaponData.Length; n++){
 
                 //IF a match is found, a panel is created and given the correct level data
                 if (GameControl.control.WeaponInfo [i].ID == GameControl.control.CurrentWeaponData [n].WeaponID) {
                     GameObject newUpgradePanel = Instantiate (upgradePanelPrefab) as GameObject;
                     UpgradePanel upgradePanelScript = newUpgradePanel.GetComponent<UpgradePanel> ();
 
                     //Set Panel Info here
                     Debug.Log ("Marker 2");
 
                     upgradePanelScript.ItemName.text = GameControl.control.WeaponInfo [i].weaponName;
                     upgradePanelScript.ItemIcon.sprite = GameControl.control.WeaponInfo [i].weaponLogo;
 
                     if (GameControl.control.CurrentWeaponData [i].WeaponLevel == 0) {
                         upgradePanelScript.upgradeCost.text = GameControl.control.WeaponInfo [i].UpgradeCost [GameControl.control.CurrentWeaponData [n].WeaponLevel].ToString () + "\nUNLOCK";
 
                         if (GameControl.control.WeaponInfo [n].MinLevelRequired != 0) {
                             upgradePanelScript.upgradePanel.SetActive (false);
                             upgradePanelScript.reqPanelLevels.SetActive (true);
                             upgradePanelScript.reqTxtLevelAmt.text = "Level " + GameControl.control.WeaponInfo [n].MinLevelRequired;
                         }
 
                         if (GameControl.control.WeaponInfo [n].MinSkullsRequired != 0) {
                             upgradePanelScript.upgradePanel.SetActive (false);
                             upgradePanelScript.reqPanelSkulls.SetActive (true);
                             upgradePanelScript.reqTxtSkullAmt.text = "x " + GameControl.control.WeaponInfo [n].MinSkullsRequired;
                         }
 
 
                     } else {
                         upgradePanelScript.upgradeCost.text = GameControl.control.WeaponInfo [i].UpgradeCost [GameControl.control.CurrentWeaponData [n].WeaponLevel].ToString () + "\nUPGRADE";
                     }        
 
                     //if players coin amount is < than current upgrade cost disable and enable req window
                     if(GameControl.control.CurrentPlayerData.coinAmt < GameControl.control.WeaponInfo [i].UpgradeCost[GameControl.control.CurrentWeaponData[n].WeaponLevel]){
                         upgradePanelScript.upgradeCost.color = new Color (131f/255.0f, 3f/255.0f, 3f/255.0f);
                     }
 
                     int indexWeapDataN = n;
                     int indexWeapInfoI = i;
                     upgradePanelScript.upgradeButton.onClick.AddListener( () => {UpgradeWeapon(indexWeapInfoI, indexWeapDataN, upgradePanelScript);});
                     upgradePanelScript.InfoButton.onClick.AddListener( () => {UpdateInfoPanel(indexWeapInfoI, indexWeapDataN);});
                     if (IsWeaponMaxed (indexWeapInfoI, indexWeapDataN)) {
                         PanelUpdateWeaponMaxed (upgradePanelScript);
                     }
 
 
 
                     //Places Panel In Correct Tab
                     switch (GameControl.control.WeaponInfo [i].type) {
                     case Weapon.Type.FIST:
                         newUpgradePanel.transform.SetParent (contentPanelFist);
                         break;
 
                     case Weapon.Type.SWORD:
                         newUpgradePanel.transform.SetParent (contentPanelSword);
                         break;
 
                     case Weapon.Type.HAMMER:
                         newUpgradePanel.transform.SetParent (contentPanelHammer);
                         break;
 
                     case Weapon.Type.CANNON:
                         newUpgradePanel.transform.SetParent (contentPanelCannon);
                         break;
 
                     default:
                         Debug.Log ("ERROR: No Match for weapon type");
                         break;    
                     }
                     //Stops looking through weap data since weapon was found
                     newUpgradePanel.transform.localScale = new Vector3 (1f, 1f, 1f);
                     //Debug.Log ("populated");
                     break;
                 } 
             }
         }
     }
 
 
     private void UpgradeWeapon(int indexWeapInfo, int indexWeapData, UpgradePanel CurrentPanel){
         if (IsWeaponMaxed (indexWeapInfo, indexWeapData)) {
             PanelUpdateWeaponMaxed (CurrentPanel);
         } else {
 
             if(GameControl.control.CurrentPlayerData.coinAmt < GameControl.control.WeaponInfo[indexWeapInfo].UpgradeCost[GameControl.control.CurrentWeaponData[indexWeapData].WeaponLevel]){
                 _ShopCounter.FlashInfoText ("You Cannot Afford Upgrade");
                 Debug.Log ("<b>ERROR:</b> Player Cannot Afford Upgrade.");
                 return;
             }
 
             GameControl.control.CurrentPlayerData.coinAmt -= GameControl.control.WeaponInfo [indexWeapInfo].UpgradeCost [GameControl.control.CurrentWeaponData [indexWeapData].WeaponLevel];
 
             GameControl.control.CurrentWeaponData [indexWeapData].WeaponLevel += 1;
 
             CurrentPanel.upgradeCost.text = GameControl.control.WeaponInfo [indexWeapInfo].UpgradeCost [GameControl.control.CurrentWeaponData [indexWeapData].WeaponLevel].ToString () + "\nUPGRADE";
 
             _ShopCounter.UpdateCounterTextPlayerData ();
 
             //if players coin amount is < than current upgrade cost disable and enable req window
             if (GameControl.control.CurrentPlayerData.coinAmt < GameControl.control.WeaponInfo [indexWeapInfo].UpgradeCost [GameControl.control.CurrentWeaponData [indexWeapData].WeaponLevel]) {
                 CurrentPanel.upgradeCost.color = new Color (131f / 255.0f, 3f / 255.0f, 3f / 255.0f);
             }
 
             if(IsWeaponMaxed(indexWeapInfo, indexWeapData)){
                 PanelUpdateWeaponMaxed(CurrentPanel);
             }
         }
         UpdateInfoPanel (indexWeapInfo, indexWeapData);
 
     }
 
     private bool IsWeaponMaxed(int indexInfo, int indexData){
         //Debug.Log (GameControl.control.WeaponInfo [indexInfo].MaxLevelCap + " " + GameControl.control.CurrentWeaponData [indexData].WeaponLevel);            
 
         if (GameControl.control.WeaponInfo [indexInfo].MaxLevelCap == GameControl.control.CurrentWeaponData [indexData].WeaponLevel) {            
             return true;
         } else {
             return false;
         }
     
     }
 
 
 
     private void PanelUpdateWeaponMaxed(UpgradePanel panel){
         panel.upgradePanel.SetActive (false);
         panel.maxedOutPanel.SetActive (true);
     }
 
     private void UpdateInfoPanel(int indexWeapInfo, int indexWeapData){
         if(GameControl.control.CurrentWeaponData[indexWeapData].WeaponLevel == 0){
             infoText.text =
                 "<size=18>" + GameControl.control.WeaponInfo [indexWeapInfo].weaponName + "</size>"
                 + "\nLEVEL: WEAPON IS LOCKED ";
         } else {
 
 
 
             infoText.text = 
                 "<size=18>" + GameControl.control.WeaponInfo [indexWeapInfo].weaponName + "</size>"
             + "\nLEVEL: " + GameControl.control.CurrentWeaponData [indexWeapData].WeaponLevel
                 + "\nDamage: " + GameControl.control.WeaponInfo[indexWeapInfo].weaponDamageNormal[GameControl.control.CurrentWeaponData[indexWeapData].WeaponLevel] + " <color=green> +" + ((GameControl.control.WeaponInfo[indexWeapInfo].weaponDamageNormal[GameControl.control.CurrentWeaponData[indexWeapData].WeaponLevel] + 1) - GameControl.control.WeaponInfo[indexWeapInfo].weaponDamageNormal[GameControl.control.CurrentWeaponData[indexWeapData].WeaponLevel]) + "</color>";
         }
     }
 }
 

 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine;
 
 public class UpgradePanel : MonoBehaviour {
     public Button InfoButton;
     public Button upgradeButton;
 
     public GameObject upgradePanel;
     public Text upgradeCost;
 
     public GameObject maxedOutPanel;
     public GameObject reqPanelLevels;
     public GameObject reqPanelSkulls;
 
     public Text reqTxtLevelAmt;
     public Text reqTxtSkullAmt;
     public Text ItemName;
     public Image ItemIcon; 
 }
 
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.UI;
 using UnityEngine;
 
 public class ShopGUICounter : MonoBehaviour {
 
     public Text coinAmt;
     public Text seedAmt;
     public Text skullAmt;
     public Text InfoText;
 
     private float currentTime = 0.0f;
     private float txtFadeTime = 3.0f;
     private float txtHoldTime = 1.0f; 
     private bool isInfoTxtVisable = false;
 
     void Start () {
         UpdateCounterTextPlayerData ();
         UpdateCounterTextLevelData ();
         InfoText.color = new Color (InfoText.color.r, InfoText.color.b, InfoText.color.b, 0f);
 
     }
 
     public void UpdateCounterTextLevelData(){
         int skullTotal = 0;
         for (int i = 0; i > GameControl.control.CurrentLevelData.Length; i++) {
             if (GameControl.control.CurrentLevelData [i].skullAFound) {
                 skullTotal += 1;
             }
 
             if(GameControl.control.CurrentLevelData[i].skullBFound){
                 skullTotal += 1;
             }
 
             if(GameControl.control.CurrentLevelData[i].skullCFound){
                 skullTotal += 1;
             }
 
         }
 
         skullAmt.text = skullTotal.ToString();
     }
 
     public void UpdateCounterTextPlayerData(){
         coinAmt.text = GameControl.control.CurrentPlayerData.coinAmt.ToString ();
         seedAmt.text = GameControl.control.CurrentPlayerData.seedAmt.ToString ();
 
     }
 
     public void FlashInfoText(string newTxt){
         currentTime = 0.0f;
         if (!isInfoTxtVisable) {
             isInfoTxtVisable = true;
             InfoText.text = newTxt;
             StartCoroutine (FadeOutText ());
         }
     }
 
     private IEnumerator FadeOutText(){
 
         while (currentTime < txtHoldTime + txtFadeTime) {
             if (currentTime > txtHoldTime) {
                 float alpha = Mathf.Lerp (1f, 0f, (currentTime - txtHoldTime)/txtHoldTime);
                 InfoText.color = new Color (InfoText.color.r, InfoText.color.b, InfoText.color.b, alpha);
             } else if(currentTime == 0.0f){
                 InfoText.color = new Color (InfoText.color.r, InfoText.color.b, InfoText.color.b, 1f);
             }
 
             currentTime += Time.deltaTime;
             yield return null;
         }
         InfoText.color = new Color (InfoText.color.r, InfoText.color.b, InfoText.color.b, 0f);
         isInfoTxtVisable = false;
         yield break;
 
 
     }
 }
 

This is how it looks in the editor:

This is show it looks in android build:

Any ideas? I'm really not sure what I'm doing wrong here.....