وجود erorr

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علت این لرور هنگام اجرای قسمت مدیریت مامبو چیست؟

Warning: include(../index.php) [function.include]: failed to open stream: No such file or directory in C:\Program Files\xampp\htdocs\mambo462p\administrator\index.p hp on line 17

Warning: include() [function.include]: Failed opening '../index.php' for inclusion (include_path='.;C:\Program Files\xampp\php\pear\&#039 in C:\Program Files\xampp\htdocs\mambo462p\administrator\index.p hp on line 17