note 42257 added to ref.session

I'm having problems registering sessions: when I use session_start or session_register the explorer returns this errors: "Warning: open(/tmp\sess_856476f72f221201bf4a00bed389d4c7, O_RDWR) failed: No such file or directory (2) in c:\archivos de programa\foxserv\www\index.php on line 2 Warning: open(/tmp\sess_856476f72f221201bf4a00bed389d4c7, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 Warning: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0" I don't know what is... If anyone can help me, please send me a mail to seppo0010@hotmail.com Thank u Seppo ---- Manual Page -- http://www.php.net/manual/en/ref.session.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+42257 Delete -- http://master.php.net/manage/user-notes.php?action=delete+42257&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+42257&report=yes Search -- http://master.php.net/manage/user-notes.php