errore mysql

[lucianocrimi]

In un mio forum mi esce un errore di questo tipo:

mySQL query error: SELECT m2.id, m2.name, m2.email, m2.hide_email, m2.location, m2.aim_name, m2.icq_number,
                           f.id as forum_id, f.read_perms, f.name as forum_name, c.state
                    FROM inv_moderators mod
                      LEFT JOIN inv_forums f ON(f.id=mod.forum_id)
                      LEFT JOIN inv_categories c ON(c.id=f.category AND c.state != 0)
                      LEFT JOIN inv_members m2 ON (mod.member_id=m2.id)
                    

mySQL error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'mod
                      LEFT JOIN inv_forums f ON(f.id=mod.forum_
mySQL error code: 
Date: Friday 26th of October 2007 07:31:23 AM 

A che cosa è dovuto e dove devo intervenire?