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

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

Fatal error: Interface 'FileNameMapper' not found in D:\Apache2.2\htdocs\safexchange\gulliver\thirdparty\phing\mappers\MergeMapper.php on line 32