Warning: require_once(PEAR/Frontend.php) [function.require-once]: failed to open stream: No such file or directory in /usr/local/www/data-dist/pl/libs/PEAR/PEAR/WebInstaller.php on line 34

Fatal error: require_once() [function.require]: Failed opening required 'PEAR/Frontend.php' (include_path='.:/usr/local/share/pear') in /usr/local/www/data-dist/pl/libs/PEAR/PEAR/WebInstaller.php on line 34