Change emission brigthness in standard shader with script

I can change emission brigthness in play mode, but not in windows standalone player:

using UnityEngine;
using System.Collections;

public class Load : MonoBehaviour
{

	private int brojac;
	private GameObject clone;
	private bool kontrola;
	private Material mat;
	private Renderer rend;
    public GameObject[] tileObjects;


	void Start ()
	{
		brojac = 0;
		kontrola = true;
	}


	void Update ()
	{

		if (Input.GetMouseButtonDown (0) && kontrola) {
			load_model ();
		}
			
		if (clone != null && !kontrola) {
			
			if (Input.GetMouseButtonDown (1)) {
				Destroy ();
			}

			if (Input.GetKey ("k")) {
				rend.material.SetColor ("_EmissionColor", Color.red * 1.5f);
				//DynamicGI.SetEmissive (rend, Color.red); 
				DynamicGI.UpdateMaterials (rend);
			}
			if (Input.GetKey ("l")) {
				rend.material.SetColor ("_EmissionColor", Color.black);
				//DynamicGI.SetEmissive (rend, Color.black); 
				DynamicGI.UpdateMaterials (rend);
			}
				

		}

	}


	void load_model ()
	{

		clone = Instantiate (tileObjects [brojac], new Vector3 (0, 0, 0), Quaternion.identity) as GameObject;
		clone.name = "Lamp";
		rend = clone.GetComponent<Renderer> ();
		rend.material.EnableKeyword ("_EMISSION");    
		kontrola = false;

	}


	void Destroy ()
	{
		Destroy (clone, 0.5f);
		brojac++;
		if (brojac == 15)
			brojac = 0;
		kontrola = true;
	}

}

SOLUTION

Edit - Project Settings - Graphics - Include Standard Shaders