Index: lib/moodlelib.php
===================================================================
--- lib/moodlelib.php	(date 1327530359000)
+++ lib/moodlelib.php	(revision )
@@ -4753,9 +4753,8 @@
 
     // Look in every instance of every module for data to delete
     $unsupported_mods = array();
-    if ($allmods = $DB->get_records('modules') ) {
-        foreach ($allmods as $mod) {
-            $modname = $mod->name;
+    if ($allmods = get_plugin_list('mod') ) {
+        foreach ($allmods as $modname) {
             if (!$DB->count_records($modname, array('course'=>$data->courseid))) {
                 continue; // skip mods with no instances
             }
@@ -4771,7 +4770,7 @@
                         debugging('Module '.$modname.' returned incorrect staus - must be an array!');
                     }
                 } else {
-                    $unsupported_mods[] = $mod;
+                    $unsupported_mods[] = $modname;
                 }
             } else {
                 debugging('Missing lib.php in '.$modname.' module!');
@@ -4781,8 +4780,8 @@
 
     // mention unsupported mods
     if (!empty($unsupported_mods)) {
-        foreach($unsupported_mods as $mod) {
-            $status[] = array('component'=>get_string('modulenameplural', $mod->name), 'item'=>'', 'error'=>get_string('resetnotimplemented'));
+        foreach($unsupported_mods as $modname) {
+            $status[] = array('component'=>get_string('modulenameplural', $modname), 'item'=>'', 'error'=>get_string('resetnotimplemented'));
         }
     }