<i>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.<br><br></i>FIrst, <b>system_settings_form() </b>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 (<a href="http://drupal.org/node/266246">issue</a>) 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.<br>
<br>Second, <b>hook_menu_active_handler_alter() </b>was removed from Drupal 7 (<a href="http://drupal.org/node/838408">issue</a>), so if you have used that, you will have to rework your code.<br><br>Thanks,<br>-Randy<br clear="all">
<br>-- <br>Randy Fay<br>Drupal Module and Site Development<br><a href="mailto:randy@randyfay.com">randy@randyfay.com</a><br>+1 970.462.7450<br><br>