Runtime error in ti:window.js

app.js

// This is a mini replica of the issue that client is seeing in their application
// I cannot reproduce it.
// This is the smallest I could create a sample test case to replicate the problem


// this is NOT important
var Utils = {};
(function(){
	Utils.CurrentActivty = null;
	Utils.isAndroidInBackground = false;
})();

// Most the UI will have to go through this namespace
var UI = {};
(function(){
	UI.Alert = function(params, callback){
		params = params || {};
		callback = callback || function(){};
		var dialog = Ti.UI.createAlertDialog(params);
		dialog.addEventListener('click', callback);
		return dialog;
	};
	UI.Image = function(a){
		a = a || {};
		return Ti.UI.createImageView(a);
	}
	UI.Label = function(a){
		a = a || {};
		return Ti.UI.createLabel(a);
	}
	UI.Button = function(a){
		a = a || {};
		a.left = 20;
		a.right = 20;
		a.height = Ti.UI.SIZE;
		return Ti.UI.createButton(a);
	};
 	UI.Win = function(a){
		a = a || {};
		a.fullscreen = a.fullscreen || false;

		var win = Ti.UI.createWindow(a);
		var opened = false;
		function openEvent(){
			win.removeEventListener('open', openEvent);
			if(opened === false){
				opened = true;
				if(win.isActivity){
					var activity = win.activity;
					Utils.CurrentActivty = win;
					Utils.isAndroidInBackground = false;
					
					if(activity.addEventListener){
						activity.addEventListener('resume', function(){
							Utils.isAndroidInBackground = false;
						});
						activity.addEventListener('pause', function(){
							Utils.isAndroidInBackground = true;
						});
					}
				} 
			}
		};
		function closeEvent(){
			win.removeEventListener('close', closeEvent);
		}
		win.addEventListener('close', closeEvent);
		win.addEventListener('open', openEvent);
		return win;
	};
	UI.LightWin = function(a){
		a = a || {};
		return Ti.UI.createWindow(a);
	}
})();

// All the windows in this app are inside of this namespace
var W = {};

W.Settings = function(){
	var self = {};
	var win = UI.LightWin({
		backgroundColor:'#ccc'
	});

	var btn1 = UI.Button({
		title:'Open a window',
		top:100
	});
	var btn2 = UI.Button({
		title:'Fire Event',
		bottom:100
	});

	win.add(btn1);
	win.add(btn2);

	btn1.addEventListener('click', function(){
		W.OtherWin().open();
	});
	btn2.addEventListener('click', function(){
		Ti.App.fireEvent('close_all');
	});


	self.open = function(){
		win.open();
	}
	self.close = function(){
		win.close();
		setTimeout(function(){
			W.Login().open();
		},400);
	}
	win.addEventListener('close', function(){
		Ti.API.info('close settings window');
		Ti.App.removeEventListener('close_all', self.close);		
	});

	Ti.App.addEventListener('close_all', self.close);

	return self;
}

// Login window, it is *lightweight*
W.Login = function(){
	var self = {};
	var win = UI.LightWin({
		backgroundColor:'white'
	});

	var loginButton = UI.Button({title:'Login', top:100});

	win.add(loginButton);

	loginButton.addEventListener('click', function(){
		self.close();
		var w = W.Settings();
		w.open();

	});

	self.win = win;
	self.open = function(){
		win.open();
	}
	self.close = function(){
		win.close();
	}
	return self;
};


W.OtherWin = function(){
	var self = {};
	var win = UI.Win({backgroundColor:'white'});

	var btn = UI.Button({
		title:'fireEvent'
	});

	win.add(btn);

	self.open = function(){
		win.open();
	}
	self.close = function(){
		win.close();
	}
	btn.addEventListener('click', function(){
		Ti.App.fireEvent('close_all');
	})
	Ti.App.addEventListener('close_all', self.close);

	win.addEventListener('close', function(){
		Ti.API.info('close other win');
		Ti.App.removeEventListener('close_all', self.close);		
	});

	return self;
}


// this is main window, gloabaly available
var BaseWindow = UI.Win({
	navBarHidden:true,
	windowSoftInputMode:Ti.UI.Android.SOFT_INPUT_ADJUST_RESIZE,
	exitOnClose:true,
	backgroundColor:'white'
});

BaseWindow.orientationModes = [Ti.UI.PORTRAIT];

BaseWindow.open();

// just to mimic the start of the app:
// BaseWindow is a heavy weight window.
// it opens W.Login, which is a lightweight window
(function(){

	var loading = Ti.UI.createProgressBar({
		value: 0,
		min: 0,
		max: 1000,
		left:20,right:20,
		height: Ti.UI.SIZE,
		color: '#888',
		message: 'Loading'
	});
	BaseWindow.add(loading);

	setTimeout(function(){
		var val = 0;
		// mimic server download stuff
		while(val < 1000){
			loading.value = val;
			val++;
		}
		W.Login().open();
		BaseWindow.remove(loading);
		loading = null;
	},300);
})();