I've checked your site and found out that the template you are using has Komento override file. As you can see in this error: http://screencast.com/t/o7DgjEOV . To prove this, I've temporary changed the template to default Joomla template Protostar and the page is loaded fine: http://screencast.com/t/GFpj6kPY . You might want to consult with the template developer about this.