--- modules\field.info.inc	Sun May 19 23:15:40 2013
+++ modules\field.info.inc	Thu Jun 06 11:04:37 2013
@@ -164,7 +164,7 @@
   if (empty($instance['settings']['alt_field'])) {
     unset($property['property info']['alt']);
   }
-  if (empty($field['settings']['title_field'])) {
+  if (empty($instance['settings']['title_field'])) {
     unset($property['property info']['title']);
   }
 }