tabGroup [ERROR] Adding an event listener to a proxy that isn't already in the context

I'm getting the following error in the console: [ERROR] Adding an event listener to a proxy that isn't already in the context

Using Titanium mobile on OSX Titanium SDK version: 2.0.1 (04/12/12 16:33 999c68a)

It only starts to show the error after clicking on on Tab1 then Tab2 then tab 1 again five or 6 times. It seems to run fine when moving the tab group code out of the module into app.js but not when created inside a module. My test case is:

In app.js I have:

var TestTabGroup = require('/ui/TestTabGroup');
 
var Test_tabs = new TestTabGroup();
Test_tabs.open();

function TestTabGroup() {
 
    var tabGroup = Ti.UI.createTabGroup();
 
    var tab1 = Ti.UI.createTab({
        title:'tab1',
    });
 
    tabGroup.addTab(tab1);
 
    var tab2 = Ti.UI.createTab({
        title:'tab2',
    });
 
    tabGroup.addTab(tab2);
 
    return tabGroup;
}
 
module.exports = TestTabGroup;