I made mistake not to deactivate all the plugs when updating (I'll never do it again, I swear), so when I went from 2.05 to 2.06 I get this whenever I upload something or create new page ;
WordPress database error: [Unknown column 'none' in 'field list']
INSERT INTO wp_post2cat (post_id, category_id) VALUES (116, none)
Warning: Cannot modify header information - headers already sent by (output started at /home/mydomain/wp-includes/wp-db.php:104) in /home/mydomain/wp-includes/pluggable-functions.php on line 270
I would appreciate any help so I wouldn't have to go writing all the posts all over again, I'll do it if there is no fix for this but if there is, I'd be very grateful.