Gizmos not working on Unity 5.0.1p1

I have tried using a basic script like this among others and no Gizmo is displayed, does anyone have any ideas?

 // C#
 // Creates a sphere where the gizmo is painted in the scene view. 
 
 using UnityEngine;
 using UnityEditor;
 
 public class ScriptableWizardOnDrawGizmos : ScriptableWizard
 {
 
     public Vector3 spherePosition = Vector3.zero;
     public float sphereRadius = 1;
 
     [MenuItem("Example/OnDrawGizmos example")]
     static void CreateWindow()
     {
         ScriptableWizard.DisplayWizard(
             "Create a Sphere",
             typeof(ScriptableWizardOnDrawGizmos),
             "Create!");
     }
 
     void OnWizardUpdate()
     {
         helpString =
             "Set the sphere position and the sphere radius to draw the gizmo in the scene view";
         if (sphereRadius > 0)
         {
             errorString = "";
             isValid = true;
         }
         else
         {
             errorString = "Radius has to be greater than 0";
             isValid = false;
         }
     }
 
     public void OnDrawGizmos()
     {
         Gizmos.color = Color.red;
         Gizmos.DrawSphere(spherePosition, sphereRadius);
     }
 
     void OnWizardCreate()
     {
         GameObject createdSphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
         createdSphere.transform.position = spherePosition;
         createdSphere.transform.localScale = new Vector3(sphereRadius, sphereRadius, sphereRadius);
     }
 }