Corrupt Windows in Titanium - titanium

Question

I open windows as follows:
app.js:
var NavigationController = require('NavigationController').NavigationController,
TestWindow = require('main_windows/tmain').TestWindow;
//create NavigationController which will drive our simple application
var controller = new NavigationController();
//open initial window
controller.open(new TestWindow(controller));
function openWindow(name, naController, event) {
var TestWindow2 = require('main_windows/t' + name).TestWindow;
var win = Titanium.UI.currentWindow;
var swin = Titanium.UI.createWindow();
if(event.bid)
swin.bid = event.bid;
if(event.uniq)
swin.uniq = event.uniq;
if (event.zipcode)
swin.zipcode = event.zipcode;
if (event.user_id)
swin.user_id = event.user_id;
if (event.service_id)
swin.service_id = event.service_id;
if (event.service_name)
swin.service_name = event.service_name;
if (event.user_uniqid)
swin.user_uniqid = event.user_uniqid;
if (event.user_name)
swin.user_name = event.user_name;
if (event.user_email)
swin.user_email = event.user_email;
if (event.provider_id)
swin.provider_id = event.provider_id;
if (event.provider_name)
swin.provider_name = event.provider_name;
if (event.total)
swin.total = event.total;
if(event.response)
swin.response = event.response;
swin.backgroundColor = '#f7f7f7';
swin.barImage = 'images/example.gif';
naController.open(new TestWindow2(naController, swin));
}
Here is the NavigationController.js
exports.NavigationController = function() {
this.windowStack = [];
};
exports.NavigationController.prototype.open = function(/*Ti.UI.Window*/windowToOpen) {
//add the window to the stack of windows managed by the controller
this.windowStack.push(windowToOpen);
//alert('open' + this.windowStack.length);
//grab a copy of the current nav controller for use in the callback
var that = this;
windowToOpen.addEventListener('close', function() {
// alert('open' + that.windowStack.length);
if(that.windowStack.length > 1)
{
//alert('pop' + that.windowStack.length);
that.windowStack.pop();
}
});
//hack - setting this property ensures the window is "heavyweight" (associated with an Android activity)
windowToOpen.navBarHidden = windowToOpen.navBarHidden || false;
//This is the first window
if(this.windowStack.length === 1) {
if(Ti.Platform.osname === 'android') {
windowToOpen.exitOnClose = true;
windowToOpen.open();
} else {
//alert('nav' + this.windowStack.length);
this.navGroup = Ti.UI.iPhone.createNavigationGroup({
window : windowToOpen
});
var containerWindow = Ti.UI.createWindow();
containerWindow.add(this.navGroup);
containerWindow.open();
}
}
//All subsequent windows
else {
if(Ti.Platform.osname === 'android') {
windowToOpen.open();
} else {
//alert('nav2' + this.windowStack.length);
this.navGroup.open(windowToOpen);
}
}
};
//go back to the initial window of the NavigationController
exports.NavigationController.prototype.home = function() {
//store a copy of all the current windows on the stack
//alert('reset' + this.windowStack.length);
var windows = this.windowStack.concat([]);
for(var i = 1, l = windows.length; i < l; i++) {
(this.navGroup) ? this.navGroup.close(windows[i]) : windows[i].close();
}
this.windowStack = [this.windowStack[0]]; //reset stack
//alert('n' + this.windowStack.length);
};
Here is tmain.js
exports.TestWindow = function(navController) {
var win = Ti.UI.createWindow({
backButtonTitleImage : 'images/backb.gif',
fullscreen : false,
navBarHidden : true,
});
var t1 = null;
win.backgroundImage = 'images/back.jpg';
var view = Titanium.UI.createView({
width : '100%',
height : '100%',
top : 270,
layout : 'vertical'
});
var b3 = Titanium.UI.createImageView({
url : 'images/login.gif',
height : 80
});
view.add(b3);
var b4 = Titanium.UI.createImageView({
url : 'images/signup.gif',
top : 0,
height : 80
});
view.add(b4);
win.add(view);
var list1 = function(e) {
openWindow('login', navController, e);
};
b3.addEventListener('click', list1);
var list2 = function(e) {
openWindow('register', navController, e);
};
b4.addEventListener('click', list2);
win.addEventListener('close', function (e) {
alert(3);
b3.removeEventListener('click', list1);
b4.removeEventListener('click', list2);
});
return win;
};
So I use the openWindow function to open windows in the app. I have a logout botton, that when people click on it, calls the function navController.home() (see Navigation Controller), but the problem is clicking on the logout link causes corrupt window state - meaning that the application crashes and when you try to open it, windows are mixed together (like buttons in window 3 show up in window 2).
What am I doing wrong?