Error when create or edit Category on Back-end

Wow.. I'am sorry for littering this support forum.. :)

Error appears when I want to create a new Category or edit it from Back-end.

Here is the error:

JDatabaseMySQL::query: 1064 - 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 '' at line 4 SQL=SELECT c.*, (SELECT count(id) FROM e2msf_js_res_categories WHERE parent_id = c.id) as childs_num FROM e2msf_js_res_categories AS c, e2msf_js_res_categories AS parent WHERE c.lft BETWEEN parent.lft AND parent.rgt AND c.section_id = 1 AND c.level <= 1 AND c.published = 1 ORDER BY

Thank you :D