Warning: include_once(phing/UnknownElement.php): failed to open stream: No such file or directory in D:\Apache2.2\htdocs\safexchange\gulliver\thirdparty\phing\parser\TaskHandler.php on line 22

Warning: include_once(): Failed opening 'phing/UnknownElement.php' for inclusion (include_path='.;C:\php\pear') in D:\Apache2.2\htdocs\safexchange\gulliver\thirdparty\phing\parser\TaskHandler.php on line 22

Fatal error: Class 'AbstractHandler' not found in D:\Apache2.2\htdocs\safexchange\gulliver\thirdparty\phing\parser\TaskHandler.php on line 36