Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.215
diff -u -p -r1.215 form.inc
--- includes/form.inc	12 Jul 2007 11:03:54 -0000	1.215
+++ includes/form.inc	13 Jul 2007 01:45:10 -0000
@@ -801,7 +801,7 @@ function _form_builder_handle_input_elem
     if (($form['#programmed']) || ((!isset($form['#access']) || $form['#access']) && isset($form['#post']) && (isset($form['#post']['form_id']) && $form['#post']['form_id'] == $form_id))) {
       $edit = $form['#post'];
       foreach ($form['#parents'] as $parent) {
-        $edit = isset($edit[$parent]) ? $edit[$parent] : NULL;
+        $edit = isset($edit[$parent]) ? $edit[$parent] : 0;
       }
       if (!$form['#programmed'] || isset($edit)) {
         // Call #type_value to set the form value;