Unable to query: Can't open file: 'misc.InnoDB'

[powerbyidea]

Plesk was working ok till now. This is the error message that I got when I try to connect:

Unable to query: Can't open file: 'misc.InnoDB' (errno: 1) 0: C:\Program Files\SWsoft\Plesk\admin\plib\common_func.php3:162 psaerror(string "Unable to query: Can't open file: 'misc.InnoDB' (errno: 1)") 1: C:\Program Files\SWsoft\Plesk\admin\plib\common_func.php3:328 db_query(string "select param, val from misc") 2: C:\Program Files\SWsoft\Plesk\admin\plib\class.Session.php:103 get_param(string "login_timeout") 3: C:\Program Files\SWsoft\Plesk\admin\auto_prepend\auth.php3:94 session->session()

Any idea on how to fix this?