--- views_bulk_operations.module.original	2009-09-28 16:34:40.000000000 +1300
+++ views_bulk_operations.module	2009-09-28 16:35:22.000000000 +1300
@@ -889,7 +889,7 @@ function theme_views_bulk_operations_con
         break;
       }
       if ($object = call_user_func($info['load'], $oid)) {
-        $output .= '<li>'. check_plain($object->{$info['title']}) .'</li>';
+        $output .= '<li>'. check_plain((string)$object->{$info['title']}) .'</li>';
         $count++;
       }
     }