NullReferenceException - Editor script using GetComponent after AddComponent

I get a NullReferenceException in this editor script when trying to set the value of a component right after adding it. Normally I could wait a frame, but how do I do that in the editor?

 using UnityEngine;
 using System.Collections;
 using UnityEditor;
 
 public class MyTools : ScriptableWizard
 {
     private GameObject camGO;
     private GameObject triggerGO;
 
     [MenuItem("Tools/My/Create Camera and Trigger at Position")]
     static void CreateWizard()
     {
         ScriptableWizard.DisplayWizard<MyTools>("Create Camera & Trigger");
     }
 
     void OnWizardCreate()
     {
         // CREATE CAMERA GO
         camGO = new GameObject("Camera");
         camGO.AddComponent<Camera>();
 
         // CREATE TRIGGER GO
         triggerGO = GameObject.CreatePrimitive(PrimitiveType.Cube);
         triggerGO.name = "Trigger";
 
         // ADD COMPONENT
         TriggerCameraSwitchScript tScript = triggerGO.AddComponent<TriggerCameraSwitchScript>();
 
         // SET COMPONENT VALUES
         tScript.settings.cameraToSwitchTo = camGO; // NULL REFERENCE ERROR
 
         // POSITION
         camGO.transform.position = SceneView.lastActiveSceneView.camera.transform.position;
         camGO.transform.rotation = SceneView.lastActiveSceneView.camera.transform.rotation;
     }
 
 }

TriggerCameraSwitch.cs

 public class TriggerCameraSwitchScript : MonoBehaviour {
 
     public TriggerCameraSettings settings;
 
     public bool bEnableRenderer;
 
     #region Events
     public delegate void EventHandler(TriggerCameraSettings triggerCameraSettings);
     public static event EventHandler CameraSwitchTriggerEntered;
     #endregion
 
     void Start()
     {
         if (bEnableRenderer)
         {
             renderer.enabled = true;
         }
         else
         {
             renderer.enabled = false;
         }
     }
 
     void OnTriggerEnter(Collider collider)
     {
         if (collider.tag != "PlayerColliderCameraSwitch") return;
     
         // SEND EVENT
         if (CameraSwitchTriggerEntered != null)
             CameraSwitchTriggerEntered(settings);
     }
 
     void OnDrawGizmosSelected()
     {
         if (settings.cameraToSwitchTo != null)
         {
             Gizmos.color = Color.red;
             Gizmos.DrawLine(transform.position, settings.cameraToSwitchTo.transform.position);
         }
     }
 
 }