CiviEvent - Free event registration multiple notices in Joomla on Thank-you page

Set up a minimal event in Joomla w/ latest 2.2 svn codebase.
Event has:

• start date / time only
• location address w/ phone number
• free event
• online registration with Send Confirmation Email? = false

Created a front-end menu item for this event.
Registering for event from Joomla front-end as anonymous, got multiple notices:

Notice: Undefined index: amount in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 395

Notice: Undefined index: amount in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396

Notice: Undefined index: currencyID in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396

Notice: Undefined index: credit_card_type in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396

Notice: Undefined index: trxn_id in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396

Notice: Undefined index: amount_level in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396

Notice: Undefined index: receive_date in /Users/dgg/htdocs/joomla159/administrator/components/com_civicrm/civicrm/CRM/Event/Form/Registration.php on line 396