Why does my static class not stay from one scene to another?

Questions & Answers
1

I have the following:

public class GameMaster : MonoBehaviour
{
    public static GameMaster GM;
    public int score;
    void Awake()
    {
        Debug.Log("GM:" + GM);
        if (GM != null)
            GameObject.Destroy(GM);
        else
            GM = this;
        DontDestroyOnLoad(this);
    }
}

I attached this to a Score gameobject in each of my three levels.

Everything works okay when I am on the 1st level.
When I issue the command: Application.LoadLevel(“AverageLevel”);
It goes to the 2nd level and I see the console output that GM is not null

From the 2nd level I issue the command: Application.LoadLevel(“DifficultLevel”);
It goes to the 3rd level and now I see GM is NULL !!!

Can anyone explain why this is? It seems that I can retain the score from the 1st to the 2nd level only. When I get to the 3rd level the static object is reset.

2

When you load the second level you see that GM is not null with this line of code:

Debug.Log("GM:" + GM);

But if it’s not null, you destroy it right after this command:

if (GM != null)
            GameObject.Destroy(GM);

So, now it’s null.