Last updated April 17, 2013. Created on November 20, 2004.
Edited by brst t, Heine, arianek, bekasu. Log in to edit this page.

If you upgrade a site from one version of Drupal to another, you must take specific steps to make your theme compatible with the new version.

Always test the modifications on a separate development server before moving to a production site.

Looking for support? Visit the Drupal.org forums, or join #drupal-support in IRC.