Loading Game Crash

Hey guys! Creeperbot65 here!

I'm having a problem with loading data and then creating instances with that data. It's kinda hard to explain but here are the scripts (All written in C#)

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class InstanceCreating : MonoBehaviour {
 
     public float PlacementTime;
     private double Wait;
     public Dropdown MeshDropdown;
     public Slider SizeSlider;
     public GameObject CubePrefab;
     public GameObject SpherePrefab;
     public GameObject CylinderPrefab;
     public GameObject CapsulePrefab;
     public Transform PositionSpawn; 
     public Camera Cam;
     public Quaternion Rotation;
     public float InstantiateDistance;
     public int OBJsCreated;
 
     //Loading Vars
     public Button LoadButton;
     public bool LoadAll = false;
     private int Instancestoload = 0;
     private int Mesh;
     private float X;
     private float Y;
     private float Z;
     public bool KillIns;
 
     void Start () {
         Button btn = LoadButton.GetComponent<Button>();
         btn.onClick.AddListener(TaskOnClick);
     }
 
     void Awake () {
         OBJsCreated = 1;
     }
 
     void FixedUpdate () {
 
         InstantiateDistance += Input.GetAxis("Mouse ScrollWheel");
 
         if (Input.GetKey(KeyCode.E) && Time.time > Wait) {
             Vector3 temp = Cam.transform.position;
             if (MeshDropdown.value == 0) {
                 Instantiate (CubePrefab, Cam.transform.position + Cam.transform.forward * InstantiateDistance , Rotation);
             } else if (MeshDropdown.value == 1) {
                 Instantiate (SpherePrefab, Cam.transform.position + Cam.transform.forward * InstantiateDistance , Rotation);
             } else if (MeshDropdown.value == 2) {
                 Instantiate (CapsulePrefab, Cam.transform.position + Cam.transform.forward * InstantiateDistance , Rotation);
             } else if (MeshDropdown.value == 3) {
                 Instantiate (CylinderPrefab, Cam.transform.position + Cam.transform.forward * InstantiateDistance , Rotation);
             }
 
             OBJsCreated = OBJsCreated + 1;
             Wait = Time.time + PlacementTime;
             }
 
         }
     
 
     void TaskOnClick () {
         LoadAll = true;
         Instancestoload = PlayerPrefs.GetInt ("InsCreated");
         Wait = Time.time + 0.2;
         while (Time.time < Wait) {
             KillIns = true;
         }
             KillIns = false;
             OBJsCreated = 1;
             for (int OBJsCreated = 1; OBJsCreated > Instancestoload; OBJsCreated++) {
 
                 Mesh = PlayerPrefs.GetInt (OBJsCreated + "_Mesh");
                 X = PlayerPrefs.GetFloat (OBJsCreated + "_X");
                 Y = PlayerPrefs.GetFloat (OBJsCreated + "_Y");
                 Z = PlayerPrefs.GetFloat (OBJsCreated + "_Z");
 
                 if (Mesh == 0) {
                     Instantiate (CubePrefab, new Vector3 (X, Y, Z), Rotation);
                 } else if (Mesh == 1) {
                     Instantiate (SpherePrefab, new Vector3 (X, Y, Z), Rotation);
                 } else if (Mesh == 2) {
                     Instantiate (CylinderPrefab, new Vector3 (X, Y, Z), Rotation);
                 } else if (Mesh == 3) {
                     Instantiate (CapsulePrefab, new Vector3 (X, Y, Z), Rotation);
                 }
 
             }
 
             LoadAll = false;
     }
 
 }
 

That was script one and here's the other for instances that have been created.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class InsScript : MonoBehaviour {
 
     public Renderer rend;
     public Texture GrassTexture;
     public Dropdown MaterialDD;
     public Slider SizeSlider;
     public Toggle PhysicsTogg;
     public Camera MainCam;
     private int InsNo;
     public int Material;
     public float Scale;
     public bool Save = false;
     public Dropdown MeshDD;
     public int Mesh;
     private bool LoadAll = false;
     private bool KillINS = false;
 
     // Use this for initialization
     void Awake () {
 
         //Gets material dropdown from StuffForCubePrefab script
         GameObject GameController = GameObject.Find("GameController");
         StuffForCubePrefab MaterialPrefabScript = GameController.GetComponent<StuffForCubePrefab>();
         InstanceCreating InstCreateScript = GameController.GetComponent<InstanceCreating>();
         InsNo = InstCreateScript.OBJsCreated;
         MeshDD = MaterialPrefabScript.MeshDD;
         MaterialDD = MaterialPrefabScript.MaterialDD;
         GrassTexture = MaterialPrefabScript.GrassTexture;
         SizeSlider = MaterialPrefabScript.SizeSlider;
         PhysicsTogg = MaterialPrefabScript.PhysicsTogg;
         MainCam = MaterialPrefabScript.MainCam;
         PhysicsTogg = MaterialPrefabScript.PhysicsTogg;
         Mesh = MeshDD.value;
 
         InstanceCreating LoadScript = GameController.GetComponent<InstanceCreating>();
         LoadAll = LoadScript.LoadAll;
         if (LoadAll == false) {
             if (MaterialDD.value == 0) {
                 rend.material.mainTexture = GrassTexture;
             }
 
             Material = MaterialDD.value;
 
             transform.localScale = new Vector3 (SizeSlider.value, SizeSlider.value, SizeSlider.value);
             Scale = SizeSlider.value;
         } else {
             Material = PlayerPrefs.GetInt (InsNo + "_Mat");
             Scale = PlayerPrefs.GetFloat (InsNo + "_Size");
 
             //sets Material
             if (Material == 0) {
                 rend.material.mainTexture = GrassTexture;
             }
 
             //sets Size
             transform.localScale = new Vector3 (Scale, Scale, Scale);
         }
 
 
     }
     
     // Update is called once per frame
     void FixedUpdate () {
         if (PhysicsTogg.isOn == false) {
             transform.rotation = Quaternion.Euler(0, 0, 0);
             Rigidbody RigidBody = GetComponent<Rigidbody>();
             RigidBody.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ | RigidbodyConstraints.FreezeRotationY | RigidbodyConstraints.FreezePositionY | RigidbodyConstraints.FreezePositionZ | RigidbodyConstraints.FreezePositionX;
         } else {
             Rigidbody RigidBody = GetComponent<Rigidbody>();
             RigidBody.constraints = RigidbodyConstraints.None;
         }
 
         GameObject GameController = GameObject.Find("GameController");
         SaveAll SaveScript = GameController.GetComponent<SaveAll>();
         Save = SaveScript.Save;
         if (Save == true) {
             PlayerPrefs.SetInt (InsNo + "_Mesh", Mesh);
             PlayerPrefs.SetInt (InsNo + "_Mat", Material);
             PlayerPrefs.SetFloat (InsNo + "_Size", Scale);
             PlayerPrefs.SetFloat (InsNo + "_X", transform.position.x);
             PlayerPrefs.SetFloat (InsNo + "_Y", transform.position.y);
             PlayerPrefs.SetFloat (InsNo + "_Z", transform.position.z);
         }
 
         InstanceCreating InsCreScript = GameController.GetComponent<InstanceCreating>();
         KillINS = InsCreScript.KillIns;
         if (KillINS == true) {
             Destroy (this.gameObject);
         }
 
     }
 }
 

Thanks for helping!

-creeperbot65