The first object in selection grid can't be activated. Why?

Questions & Answers
1

Essentially what I said in the title. This is my code:

#pragma strict
//@ExecuteInEditMode

var customButton : GUIStyle;
var confirmMenu : GUIStyle;
var SubMenuBox1 : GUIStyle;
var SubMenuBox2 : GUIStyle;
var selGridInt : int = -1;
var selGridInt2 : int = 0;
var selStrings2 : String[] = ["Yes", "No"];
var selStrings1 : String[] = ["Sandbox", "Multiplayer", "Options", "Exit"];
//var MainMenu:GUISkin;
//var Rect2 = RectOffset(0,0,10,10);
//var sliderValue : float = 1.0;
//private var rctOff : RectOffset;

function Start(){
	
}

//#if UNITY_EDITOR #endif
function OnGUI () {
		selGridInt = GUI.SelectionGrid (Rect (Screen.width*0.015625, Screen.height*0.014286, 75, 95), selGridInt, selStrings1, 1, customButton);
		if (selGridInt == 0){
			Application.LoadLevel("gameDemo");
		}
		
		if (selGridInt == 1){
			Application.LoadLevel("");
		}
		
		if (selGridInt == 2){
			//GUI.Box(Rect(Screen.width/2, Screen.height/2, 100, 200, "Are you sure?", confirmMenu));
			selGridInt2 = GUI.SelectionGrid (Rect (Screen.width/2, Screen.height/2, 75, 25), selGridInt2, selStrings2, 2, customButton);
			if(selGridInt2 == 1){
				Application.LoadLevel(Application.loadedLevel);
			}
			
			//if(selGridInt2 != 1||0){
				//System.Diagnostics.Process.GetCurrentProcess().Kill();
			//}
		}
}
2

I made a test scene and copied your code. I also created dummy scenes “gameDemo” and “Multiplayer” and added them to the build settings. I changed line 29 to load the Multiplayer scene.

Well, it all works on my machine. The scenes open as expected, the options open as expected, and the Yes/No buttons of the options work as expected. So, it’s not a problem with the code. Maybe there’s something wrong with the input. Probably your mouse isn’t detected for some reason.