The Smarty templates class is not in your include path. Either specify the location of smarty via the SMARTY_PATH define in config.php (and don't forget the trailing slash) or install smarty in your include path. The Smarty templates class could not be found at . Without this class being available, phpBugTracker will not be able to work. Smarty can be downloaded from the smarty website. Please reload this page when smarty has been installed.