### Eclipse Workspace Patch 1.0
#P moodle20
Index: mod/quiz/override_form.php
===================================================================
RCS file: /cvsroot/moodle/moodle/mod/quiz/override_form.php,v
retrieving revision 1.1
diff -u -r1.1 override_form.php
--- mod/quiz/override_form.php	8 Mar 2010 16:01:39 -0000	1.1
+++ mod/quiz/override_form.php	7 May 2010 03:33:37 -0000
@@ -68,7 +68,9 @@
                 // Prepare the list of groups
                 $groups = groups_get_all_groups($cm->course, null, $cm->groupingid);
                 if (empty($groups)) {
-                    $groups = array();
+                    // generate an error
+                    $link = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id));
+                    print_error('groupsnone', 'quiz', $link);
                 }
 
                 $groupchoices = array();