Index: token.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/token/token.module,v
retrieving revision 1.7.4.48
diff -u -r1.7.4.48 token.module
--- token.module	14 Dec 2010 18:10:07 -0000	1.7.4.48
+++ token.module	9 Jan 2011 11:05:33 -0000
@@ -723,7 +723,7 @@
   if (!empty($element['#token_types'])) {
     $invalid_tokens = token_get_invalid_tokens_by_context($tokens, $element['#token_types']);
     if ($invalid_tokens) {
-      form_error($element, t('The %element-title is using the following invalid tokens: @invalid-tokens.', array('%element-title' => $element['#title'], '@invalid-tokens' => implode(', ', $invalid_tokens))));
+      form_error($element, t('The %element-title is using the following invalid tokens: @invalid-tokens.', array('%element-title' => (!empty($element['#title']) ? $element['#title'] : $element['#title_invisible']), '@invalid-tokens' => implode(', ', $invalid_tokens))));
     }
   }