We have been using Drupal and CiviCRM for 5 years or so to edit profiles. Setup via the Administration -> Customise Data and Screens -> Profiles.
It is now saying 'The changes have been saved' and reloads the form with the old data rather than updating the CRM database.
I have been searching the drupal folder in civicrm for a submit hook and anything to test the connection. How does it work?
Drupal 7.41 and Civicrm 4.5.8.