TOPIC: Required Fields Not Being Validated

I've got fields that are required for registration form, but the user can click next and it will proceed even if all the of the fields are empty. I just updated to 2.7.9 thinking that may fix the issue but it is still happening... Any suggestions of things to check?

Link: http://www.developyourpeople.com/index.php?option=com_dtregister&Itemid=0&eventId=83&controller=event&task=individualRegister