changed recommendation in config aswell

config/example-config.php

@@ -268,7 +268,7 @@ $c->admin_email = 'calendar-admin@example.com';
 //       'type' => 'calendar',
 //       'name' => 'calendar',
 //       'displayname' => '%fn calendar',
-//       'privileges'  => null
+//       'privileges'  => array()
 //     )
 // );
 

inc/auth-functions.php

@@ -106,8 +106,9 @@ function CreateHomeCollections( $username, $default_timezone = null ) {
     // XXX Should we not do this for ROOMS?
     if( !empty($c->home_addressbook_name) )
       $c->default_collections[] = array(
-        'type' => 'addressbook',
-        'name' => $c->home_addressbook_name
+        'type'       => 'addressbook',
+        'name'       => $c->home_addressbook_name,
+        'privileges' => array()
       );
   }
 

inc/schedule-functions.php

@@ -312,7 +312,7 @@ function processItipCancel( vCalendar $vcal, vProperty $attendee, WritableCollec
 
   if ( $attendee_calendar->actualDeleteCalendarMember($row->dav_name) === false ) {
     dbg_error_log('ERROR', 'Could not delete calendar member %s for %s',
-                                    $row->dav_name(), $attendee->Value());
+                                    $row->dav_name, $attendee->Value());
     trace_bug('Failed to write scheduling resource.');
     return '5.2';
   }