Problem je najverovatnije u bazi podataka.
Ako imaš (a imaš) pristup bazi probaj da uradiš ovaj queries
INSERT INTO jos_fb_users (userid, posts) SELECT userid, COUNT(userid)
FROM jos_fb_messages
WHERE userid>0 AND hold=0
GROUP BY userid
ON DUPLICATE KEY UPDATE posts=VALUES(posts);
INSERT INTO jos_fb_categories (id, numTopics, numPosts)
SELECT m.catid, SUM( m.parent=0 ), SUM( m.parent>0 )
FROM jos_fb_messages as m
LEFT JOIN jos_fb_categories AS c ON c.id=m.catid
WHERE m.catid >0 AND m.hold=0
GROUP BY catid
ON DUPLICATE KEY UPDATE numTopics=VALUES(numTopics), numPosts=VALUES(numPosts);
INSERT INTO jos_fb_categories (id, numTopics, numPosts)
SELECT parent, SUM( numTopics ), SUM( numPosts )
FROM jos_fb_categories
WHERE parent > 0
GROUP BY parent
ON DUPLICATE KEY UPDATE numTopics=VALUES(numTopics), numPosts=VALUES(numPosts);
Ako i posle toga ne rešiš problem !!
Deinstaliraš Kunenu a zatim da u bazi izbrišeš sve tabele koje imaju predznak #_fb_ i nakon toga ponovo instaliraš Kunenu, jer ako je pre radilo bez problema na taj način ćeš sigurno rešiti.
VAŽNO: Ako to uradiš moraš ponovo da napraviš Kategorije i Forume i gubiš sve dosadašnje poruke na forumu!!!