Index: modules/node/content_types.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/content_types.inc,v
retrieving revision 1.50.2.1
diff -u -F^f -r1.50.2.1 content_types.inc
--- modules/node/content_types.inc	13 Feb 2008 11:23:28 -0000	1.50.2.1
+++ modules/node/content_types.inc	26 May 2008 18:11:56 -0000
@@ -296,7 +296,7 @@ function node_type_form_submit($form, &$
     }
   }
 
-  unset($variables['form_token'], $variables['op'], $variables['submit'], $variables['delete'], $variables['reset'], $variables['form_id']);
+  unset($variables['form_token'], $variables['op'], $variables['submit'], $variables['delete'], $variables['reset'], $variables['form_id'], $variables['form_build_id']);
 
   // Save or reset persistent variable values.
   foreach ($variables as $key => $value) {