--- sites/all/modules/i18n/i18n_string/i18n_string.pages_1.inc	Thu Mar 27 18:58:09 2014
+++ sites/all/modules/i18n/i18n_string/i18n_string.pages.inc	Thu Mar 27 19:04:47 2014
@@ -399,7 +399,8 @@
   locale_translate_edit_form_submit($form, $form_state);
   $lid = $form_state['values']['lid'];
   $i18n_string_object = i18n_string_get_by_lid($lid);
-  $i18n_string_object->cache_reset();
+  if(is_object($i18n_string_object))
+    $i18n_string_object->cache_reset();
   foreach ($form_state['values']['translations'] as $key => $value) {
     if (!empty($value)) {
       // An update has been made, so we assume the translation is now current.