How do you debug an exception error?

Getting Started
1

I am getting the following error whenever I build a standalone web app. It runs but when the user loads one of my pages I get the following error but I do not get the error in the IDE. What is the best way to go about trying to track this error down?

2014-03-29 01:44:04
JavaScript Error:
Error: Could not execute returned javascript: ‘null’ is not an object (evaluating ‘document.getElementById(‘LYMRKGNg’).style’)
Source: document.getElementById(‘LYMRKGNg’).style.userSelect = ‘none’;document.getElementById(‘LYMRKGNg’).style.webkitUserSelect = ‘none’;document.getElementById(‘LYMRKGNg’).style.MozUserSelect = ‘none’;

Xojo.createNamespace(“WebEssentials.WELabelHelper”);
new frameworkObject(‘Hz3YCIfV’,[]);
Xojo.controls[‘Hz3YCIfV’].setEnabled(true);
new frameworkObject(‘WporQe3i’,[]);
Xojo.controls[‘WporQe3i’].setEnabled(true);
new imageview(‘EJuJiWs5’,[]);
Xojo.controls[‘EJuJiWs5’].setEnabled(true);
Xojo.controls[‘EJuJiWs5’].setVerticalAlignment(2);
Xojo.controls[‘EJuJiWs5’].setHorizontalAlignment(2);
Xojo.input.install(Xojo.controls[‘EJuJiWs5’].object());
new textlabel(‘NGFjXXsI’,[‘TextChanged’]);
Xojo.controls[‘NGFjXXsI’].setEnabled(true);
Xojo.controls[‘NGFjXXsI’].setMultiline(true);
new dialog(‘Si70rKPF’,[]);
Xojo.controls[‘Si70rKPF’].setEnabled(true);
Xojo.controls[‘Si70rKPF’].minWidth = 0;
Xojo.controls[‘Si70rKPF’].minHeight = 0;
new textcontrol(‘JyVK8ZDH’,[]);
Xojo.controls[‘JyVK8ZDH’].setEnabled(true);
new textlabel(‘Tl8rP6gD’,[‘TextChanged’]);
Xojo.controls[‘Tl8rP6gD’].setEnabled(true);
new container(‘Mgb1jFMS’,[]);
Xojo.controls[‘Mgb1jFMS’].setEnabled(true);
new textcontrol(‘UqAf7GPz’,[]);
Xojo.controls[‘UqAf7GPz’].setEnabled(true);
new textlabel(‘Dd6mTVEk’,[‘TextChanged’]);
Xojo.controls[‘Dd6mTVEk’].setEnabled(true);
new textlabel(‘X2nvnCJ6’,[‘TextChanged’]);
Xojo.controls[‘X2nvnCJ6’].setEnabled(true);
new textlabel(‘JW23EUAI’,[‘TextChanged’]);
Xojo.controls[‘JW23EUAI’].setEnabled(true);
new webcanvas(‘M4RMAUov’,[‘Open’,‘Resized’]);
Xojo.controls[‘M4RMAUov’].setEnabled(true);
new textlabel(‘Q7CYtQS0’,[‘TextChanged’]);
Xojo.controls[‘Q7CYtQS0’].setEnabled(true);
new container(‘JveX2XmO’,[‘MouseDown’]);
Xojo.controls[‘JveX2XmO’].setEnabled(true);
new textlabel(‘BRptVzAf’,[‘TextChanged’]);
Xojo.controls[‘BRptVzAf’].setEnabled(true);
new frameworkObject(‘ZUkSUvls’,[]);
Xojo.controls[‘ZUkSUvls’].setEnabled(true);
new frameworkObject(‘IsrS5pkV’,[]);
Xojo.controls[‘IsrS5pkV’].setEnabled(true);Xojo.controls[‘EJuJiWs5’].object().style.top = ‘220px’;
Xojo.controls[‘EJuJiWs5’].refresh();
Xojo.controls[‘NGFjXXsI’].object().style.top = ‘570px’;
Xojo.controls[‘NGFjXXsI’].refresh();
Xojo.controls[‘Q7CYtQS0’].setValue(“Remember Username / Password”);
Xojo.view.showPage(‘IsrS5pkV’);
document.title = “Login”;

Xojo.refreshControl(‘Hz3YCIfV’);

Xojo.refreshControl(‘OOhLErId’);

Xojo.refreshControl(‘Si70rKPF’);

Xojo.refreshControl(‘WporQe3i’);

Xojo.refreshControl(‘EJuJiWs5’);

Xojo.refreshControl(‘NGFjXXsI’);

Xojo.refreshControl(‘JyVK8ZDH’);

Xojo.refreshControl(‘Mgb1jFMS’);

Xojo.refreshControl(‘Tl8rP6gD’);

Xojo.refreshControl(‘UqAf7GPz’);

Xojo.refreshControl(‘Dd6mTVEk’);

Xojo.refreshControl(‘X2nvnCJ6’);

Xojo.refreshControl(‘JW23EUAI’);

Xojo.refreshControl(‘JveX2XmO’);

Xojo.refreshControl(‘M4RMAUov’);

Xojo.refreshControl(‘Fmo15Kp7’);

Xojo.refreshControl(‘Q7CYtQS0’);

Xojo.refreshControl(‘BRptVzAf’);

Xojo.refreshControl(‘ZUkSUvls’);
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