Hi, First there is a tremendous confusion about SQLite and PHP and drivers. What we need is NOT the sqlite extension NOR sqlite3 from PECL/PHP 5.3 What we DO need is PDO_SQLite. If we want to clean up the installer and make maintenance nicer, we must require this driver to be available. Once we did that we can re-use it for the registry tables provided I can make it so that it is able to rebuild itself from MySQL. I have put up the challenge to http://drupal4hu.com/node/177 months ago. I will present the contenders to Dries in Washington DC. If there are no contenders then I will present that. Speak now or forever hold your peace. Thanks NK