Scene Reset - Messing with Lighting

I am new to Unity and scripting but I have been making some progress in a project and have hit a snag. In the project the user should be able to rotate around an object and click R to reset the scene so the object is once again in its original orientation. I found a script online that achieves this but it is also causing something weird with the lighting in the scene (directional light). When R is clicked the model resets but it appears much darker than when the user originally presses play. In the lights properties I notice that before the reset it's y rotation is set to -30 and after the reset it is set to 330, the angle of the light doesnt seem to have changed though so I dont understand why that would change the lighting of the model.
I am using the latest issue of Unity 5, below is the code I used that is causing the lighting issue.

using UnityEngine;
using System.Collections;

public class ReloadOnClick : MonoBehaviour {

void Update ()
{
if(Input.GetKeyDown (KeyCode.R))//if hit R Key
{
Application.LoadLevel(Application.loadedLevel);
}
}
}

 

does it happen when you make a build, or just in the editor? ive noticed that in the editor it doesnt calculate the light stuff or something like that if you load scenes from code, but works in build