titanium picker won't display

gistfile1.js

warningTimeRow.addEventListener('click', function(e) {
	try {
		var root = Ti.UI.createView({});
		var dialog = Ti.UI.createOptionDialog({
			androidView:root,
			options:null,
			buttonNames: ['Set','Cancel'],
			title:'Advanced warning'
		});		
		var view = Ti.UI.createView({
			width : 300, height: '75'
		});
		root.add(view);
	} catch (e) {
		Ti.API.warn('failed to initialize warning time window: '+e.description);
	}
	try {
		var wTPicker = Titanium.UI.createPicker({
			color:'#999',
			font:{fontSize:12,fontFamily:'Helvetica Neue'},
			width:'auto',
			height:'auto',
			top:0,
			useSpinner:true
		});
		var col = Titanium.UI.createPickerColumn();
		Ti.API.debug('added wait time picker column');
		var wTPicker = Titanium.UI.createPicker();
		var data = [];
		for (i=0; i<=30; i++) {
			data.push(Titanium.UI.createPickerRow({title:''+i}));
			Ti.API.trace('added wait time picker row'+i);
		}

		wTPicker.add(data);
		wTPicker.selectionIndicator=true;
		Ti.API.debug('added wait time col to picker');
		view.add(wTPicker);
		Ti.API.debug('added wait time picker to view');
		
	} catch (e) {
		Ti.API.warn('failed to initialize warning time picker: '+e.description);
	}

	dialog.addEventListener('click', function(e) {
		Titanium.API.debug('warning time window closed');
		if (e.index == 0) { //make sure "set" button was pushed
			try {
				Titanium.API.debug('warning time is '+wTPicker.getSelectedRow(0).title);
				Titanium.App.Properties.setInt('WarningTime',parseInt(wTPicker.getSelectedRow(0).title));
				Titanium.API.debug('warning time property set to ' +wTPicker.getSelectedRow(0).title);
				warningTimeChoiceLabel.text = wTPicker.getSelectedRow(0).title+' min';
				Titanium.API.debug('warning time label changed');
			} catch (e) { Ti.API.warn("couldn't set warning time: "+e.description);}
		} else {
			Titanium.API.debug('...via cancel');
		}
	});
	try {
		dialog.show();
		Titanium.API.debug('warning time window open');
	} catch (e) {
		Ti.API.warn('failed to show warning time dialog: '+e.description);
	}
});