? config.php
? lib/yui/version.php
Index: lib/grouplib.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/grouplib.php,v
retrieving revision 1.43
diff -u -r1.43 grouplib.php
--- lib/grouplib.php	10 Feb 2010 09:37:52 -0000	1.43
+++ lib/grouplib.php	23 Feb 2010 14:00:00 -0000
@@ -593,7 +593,7 @@
         $groupname = reset($groupsmenu);
         $output = $grouplabel.': '.$groupname;
     } else {
-        $select = new single_select($urlroot, 'group', $groupsmenu, $activegroup, null, 'selectgroup');
+        $select = new single_select(new moodle_url($urlroot), 'group', $groupsmenu, $activegroup, null, 'selectgroup');
         $select->label = $grouplabel;
         $output = $OUTPUT->render($select);
     }