Index: mailman_manager.module
===================================================================
--- mailman_manager.module	(revision 188)
+++ mailman_manager.module	(working copy)
@@ -442,7 +442,7 @@
   while($list = db_fetch_object($result)) {
     $list->edit = l(t('Edit'), 'admin/settings/mailman_manager/edit/' . $list->lid);
     $list->delete = l(t('Delete'), 'admin/settings/mailman_manager/delete/' . $list->lid);
-    $lists[] = $list;
+    $lists[] = (array) $list;
       }           
 
   $output .= theme('table', $headers, $lists);