http://www.mug.org/?page=CiviCRM&q=civicrm%2Fevent%2Fregister&id=42&reset=1

enter email and press "Continue"

then sent to:

http://www.mug.org/?page=CiviCRM&q=civicrm%2Fevent%2Fregister&_qf_ThankYou_display=true&qfKey=86e149c519244bd2f1600a1743fcbc68_3425

which displays:

Warning: Smarty error: unable to read resource: "" in /home/mugorg/public_html/wp-content/plugins/civicrm/civicrm/packages/Smarty/Smarty.class.php on line 1094