That code was not updated in the last release when we made some changes to the Data Provider javascript classes.

Add the following as the first 2 lines of the Data Providers script tags area.

<!-- Data Providers --> <script type="text/javascript" src="/modules/dashboards/web/js/extend.js"></script> <script type="text/javascript" src="/mango-javascript/v1/dataProvider.js"></script>

It looks like you are using Chrome? If so I suggest you use the the Developer Tools and reload the page. This will show you any errors that exist. Also it will allow you to configure the window to not use the cache while you are testing/developing javascript.

Open the Developer Tools by using the menus View->Developer->Developer Tools.

Hope this helps,
Terry