[TIMOB-5979] iOS: Unable to view the current exception in the Titanium Studio debugger

// this sets the background color of the master UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#000');
 
 // create tab group
 var tabGroup = Titanium.UI.createTabGroup();
 
 
 //
 // create base UI tab and root window
 //
 var win1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
 });
 var tab1 = Titanium.UI.createTab({  
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
 });
 
 var label1 = Titanium.UI.createLabel({
    color:'#999',
    text:'I am Window 1',
    font:{fontSize:20,fontFamily:'Helvetica Neue'},
    textAlign:'center',
    width:'auto'
 });
 //Lines added to simulate the problem
 var a=b+1;
 label1=a;
 win1.add(label1);
 
 
 
 //fetching the xml data and puting into the table
 
 // create controls tab and root window
 //
 var win2 = Titanium.UI.createWindow({  
    title:'Tab 2',
    backgroundColor:'#fff'
 });
 var tab2 = Titanium.UI.createTab({  
    icon:'KS_nav_ui.png',
    title:'Tab 2',
    window:win2
 });
 
 var label2 = Titanium.UI.createLabel({
    color:'#999',
    text:'I am Window 2',
    font:{fontSize:20,fontFamily:'Helvetica Neue'},
    textAlign:'center',
    width:'auto'
 });
 
 win2.add(label2);
 
 
 
//
//  add tabs
//
tabGroup.addTab(tab1);  
tabGroup.addTab(tab2);  
 
 
// open tab group
tabGroup.open();