Add Contacts to Group fatal error if all X records radio option is checked

Fatal error is thrown under the following steps:

• Manage Groups >> New Group
• Enter group name, type = ACL Group (this probably doesn't matter but it's what I did)
• Click continue
• Search for contacts to add to group - enter 'ada' as search string
• Click the radio button for "all 6 records"
• Click "Add Contacts to xxxx Group" button

Fatal error: Call to undefined method CRM_Group_Controller::selectorName() in /Users/dgg/svn/trunk/CRM/Contact/Form/Task.php on line 98

NOTE: This task works properly - doesn't throw the error - if you chose the "selected records only" radio button instead