When upgrading from Achievo version 1.0.4 or earlier, a database patch is necessary. The Achievo setup.php script can take care of this. After upgrading the software, go to the setup.php script in your Achievo directory, using your browser. Login as 'Administrator', with the password configured in the config.inc.php file, and follow the instructions on screen. More detailed upgrade instructions can be found in the UPGRADE file in the doc/ directory inside the Achievo tar.gz file
Download achievo-1.1.rc2.tar.gz