=========================================================================== $NetBSD: MESSAGE,v 1.1.1.1 2011/12/15 12:36:38 taca Exp $ If you update from old release (4.2.3 or before), you will need to create a new encryption key. (1) Upgrade to the new TYPO3 version. (2) Clear the configuration cache (3) Open the install tool and choose menu 1 ("Basic Configuration"). (4) Scroll to the bottom of the page and click on the button "Generate random key". (5) Submit the form by clicking on "Update localconf.php". (6) Clear the configuration and page cache again. ===========================================================================