*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. *File, Form, and XMLRPC APIs changed recently: - (issue <http://drupal.org/node/763376>) If you use*#limit_validation_errors * in a multistep form, especially #limit_validation_errors = array(), your multistep form may now be broken. - (issue <http://drupal.org/node/846296>) If you do *file downloads*, there is a new access check regimen to use. hook_file_download_access() and hook_file_download_access_alter() have been added. - (issue <http://drupal.org/node/353458>) *hook_file_references*() was removed, and the entire method of managing references to managed files was changed and simplified. The summary is in http://drupal.org/node/353458#comment-3193206. If your code implements hook_file_references() or otherwise uses managed files, you'll want to take a look at this. - (issue <http://drupal.org/node/881536>) *xmlrpc*() function was changed. If your module uses xmlrpc(), it's broken until you fix it. Upgrade details are at http://drupal.org/update/modules/6/7#xmlrpc Thanks, -Randy -- Randy Fay Drupal Module and Site Development randy@randyfay.com +1 970.462.7450