Warning: include_once(PS\PS.php) [function.include-once]: failed to open stream: No such file or directory in C:\Program Files\xampp\htdocs\stats\includes\class_PS.php on line 100

Warning: include_once() [function.include]: Failed opening 'PS\PS.php' for inclusion (include_path='.;C:\Program Files\xampp\php\pear\') in C:\Program Files\xampp\htdocs\stats\includes\class_PS.php on line 100

Fatal error: Class 'PS' not found in C:\Program Files\xampp\htdocs\stats\includes\class_PS.php on line 104