Warning: require_once(_aws/class/S3.php) [function.require-once]: failed to open stream: No such file or directory in C:\winsys\rgopk2\config_aws.php on line 6

Fatal error: require_once() [function.require]: Failed opening required '_aws/class/S3.php' (include_path='.;C:\php5\pear') in C:\winsys\rgopk2\config_aws.php on line 6