GUI Problem. Editor works, build does not.

Hi, I have a problem that is reaaally annoying me.

I have a really simple code that works perfectly fine when I launch it on the editor, but that goes nuts when I Build and Run it. I've been trying to find the problem for so long, but I can't seem to make it work. Here it goes :

public class Menu : MonoBehaviour {

bool inMenu = true;
bool inLobby = false;

void OnGUI(){

if(inMenu){

if(GUI.Button(new Rect(Screen.width-100, 0, 100, 50), "Connect")){

inLobby = true;
inMenu = false;​

}​

}else if (inLobby){

GUI.Label(new Rect(Screen.width-100, 0, 100, 50), "Number of players: " + 1);
if(GUI.Button(new Rect(Screen.width-100, 50, 100, 50), "Start Game")){

Destroy(this);​

}​

}​

}​

}

The Code in inMenu works fine, but as soon as I get inLobby in my Build, the inMenu code stays on. Here's a picture of the problem

 

My guess is that you've somehow got two instances of the script running.

 

That could have been it but to test the code, I created a new Project, put an empty GameObject and put my script in it.