--- theme/theme.inc.orig	2008-10-28 23:12:09.000000000 +0100
+++ theme/theme.inc	2008-11-03 05:23:11.000000000 +0100
@@ -128,12 +128,12 @@ function template_preprocess_content_dis
     $element = &$form[$key];
     $row = new stdClass();
     foreach (element_children($element) as $child) {
-      if (!array_key_exists('exclude', $element[$child])) {
+      if (!array_key_exists('format', $element[$child])) {
         $row->{$child} = drupal_render($element[$child]);
       }
       else {
         $row->{$child}->format = drupal_render($element[$child]['format']);
-        $row->{$child}->exclude = drupal_render($element[$child]['exclude']);
+        $row->{$child}->exclude = isset($element[$child]['exclude']) ? drupal_render($element[$child]['exclude']) : '';
       }
     }
     $row->label_class = in_array($key, $form['#groups']) ? 'label-group' : 'label-field';