title: Gravity Forms Error
body: <p>I keep trying to setup a notification when a form is submitted but I'm not getting the emails. When I go back in to edit the notification, it is not there. It's like it is not saving that. Then I noticed this on the notifications page: <code>function WP_List_Table::get_columns() must be over-ridden in a sub-class.</code> Any idea what that means?</p>
  
  <p>Note: It is saving the submissions in the entries area of the plugin.</p>