participant listing error after upgrade

[Eileen]

I can't view this page after upgrade - (event ID 79) index.php?q=civicrm/event/participant&reset=1&id=79

I get :

backTrace

C:\xampp\htdocs\classes2.2\sites\all\modules\civicrm\CRM\Core\Error.php, backtrace, 258
C:\xampp\htdocs\classes2.2\sites\all\modules\civicrm\CRM\Event\Page\ParticipantListing.php, fatal, 90
C:\xampp\htdocs\classes2.2\sites\all\modules\civicrm\CRM\Core\Invoke.php, run, 205
C:\xampp\htdocs\classes2.2\sites\all\modules\civicrm\drupal\civicrm.module, invoke, 341
, civicrm_invoke,
C:\xampp\htdocs\classes2.2\includes\menu.inc, call_user_func_array, 348
C:\xampp\htdocs\classes2.2\index.php, menu_execute_active_handler, 18

unrecoverable error
    Sorry. A non-recoverable error has occurred.

    Participant listing code file: .php does not exist. Please verify your custom particpant listing settings in CiviCRM administrative panel.

    Return to home page.

Is there a new setting I need to find & set?

[Donald Lobo]

This is a bug, we did not upgrade this option group from 2.1.

Please file an issue and we'll fix it in 2.2.1

lobo