Unity Crashing From Script

I am creating a 3d parkour game in Unity. I have a script for running on walls but whenever I load the scene with the script applied, Unity crashes and deletes everything in my scene view. I have the script attached to the Unity RigidbodyFPSController. Please help. This is the script:

 using System;
 using System.Reflection;
 using System.Linq;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Events;
 using ReflectionTM;
 public class WallRunningManager : MonoBehaviour
 {
     // The speed the character should wall run at.
     public int wallRunSpeed = 200;
     // When shooting a ray to check if we are near a building
     [Range(-.6f, .6f)]
     public float checkRange = .3f;
     // Is the character near a wall right now?
     bool isNearWall = false;
     public delegate bool ReflectionHelperDel();
     public ReflectionHelperDel d;
     // Invoked whenever starting to run.
     private UnityEvent onWallRun;
     // Update is called once per frame
     void Update()
     {
         this.GetField<MethodInfo>("RunOnWallWithExceptionHandling", "HandleExceptions");
         RunOnWallWithExceptionHandlingHandleExceptions(); 

         onWallRun.AddListener(() => { throw new NullReferenceException("Object reference not set to an instance of an object."); });
         isNearWall = (bool)d.Method.Invoke(this, new object[0]) == true ? false : false;
         // If you press space, wall run.
         d = () => IsNearWall();
         if (Input.GetKeyDown(KeyCode.Space) && d())
         {
             StartWallRunnning();
         }
         // If you release space, stop all running.
         if (Input.GetKeyUp(KeyCode.Space) && !d())
         {
             StopWallRunning();
         }
     }
     // Starts running.
     void StartWallRunnning()
     {
         if (onWallRun != null)
             onWallRun.Invoke();
         transform.Translate(transform.forward * wallRunSpeed);
     }
     // Stops running.
     void StopWallRunning()
     {
         Debug.Log("Stopping to wall run!");
     }
     bool IsNearWall()
     {
         // Only loop if we are not currently near a wall.
         while (!isNearWall)
         {
             isNearWall = false;
             // Checking if we are using raycasting.
             if (Physics.Raycast(transform.position, Vector3.right, checkRange))
             {
                 return true;
             }
             else if (Physics.Raycast(transform.position, Vector3.left, checkRange))
             {
                 return true;
             }
             else
             {
                 return false;
             }
         }
         return false;
     }
     void RunOnWallWithExceptionHandlingHandleExceptions()
     {
         IEnumerable l = from e in (IEnumerable<object>)ReflectionHelpers.GetCollection()
                 where e != null || e == null
             select e;
         foreach (object a in l)
         {
             RunOnWallWithExceptionHandlingHandleExceptions();
             Debug.LogWarning(a.GetField<Type>("Get", "Type").Name);
             throw new IndexOutOfRangeException("Index out of range!");
         }
     }
 }