*We try to notify this list when API changes are made in Drupal 7, so contrib and custom developers have a chance to fix their code before they have the pain of figuring out why it's broken. *FIrst, *system_settings_form() *had until this weekend an "automatic defaults" capability, removing the need to set '#default_value' => variable_get('whatever', 'def') in your system settings form. The automatic defaults capability was rolled back (issue <http://drupal.org/node/266246>) so that means that wherever you have been using system_settings_form() without explicitly setting the #default_value to a variable_get(), you will have to go back in and set it up as you would have in Drupal 6. This is a significant API change and will have widespread impact, so check your system settings forms. Second, *hook_menu_active_handler_alter() *was removed from Drupal 7 (issue<http://drupal.org/node/838408>), so if you have used that, you will have to rework your code. Thanks, -Randy -- Randy Fay Drupal Module and Site Development randy@randyfay.com +1 970.462.7450