Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.275
diff -u -p -r1.275 form.inc
--- includes/form.inc	25 Jun 2008 09:57:07 -0000	1.275
+++ includes/form.inc	27 Jun 2008 14:59:44 -0000
@@ -776,12 +776,17 @@ function form_execute_handlers($type, &$
  *   element where the #parents array starts with 'foo'.
  * @param $message
  *   The error message to present to the user.
+ * @param $reset
+ *   Reset the form errors static cache.
  * @return
  *   Never use the return value of this function, use form_get_errors and
  *   form_get_error instead.
  */
-function form_set_error($name = NULL, $message = '') {
+function form_set_error($name = NULL, $message = '', $reset = FALSE) {
   static $form = array();
+  if ($reset) {
+    $form = array();
+  }
   if (isset($name) && !isset($form[$name])) {
     $form[$name] = $message;
     if ($message) {