cant post or register

Im getting a general error when someone tries to post.
Field 'post_edit_reason' doesn't have a default value [1364]SQLINSERT INTO phpbb_posts (forum_id, poster_id, icon_id, poster_ip, post_time, post_approved, enable_bbcode, enable_smilies, enable_magic_url, enable_sig, post_username, post_subject, post_text, post_checksum, post_attachment, bbcode_bitfield, bbcode_uid, post_postcount, post_edit_locked, topic_id) VALUES (13, 41, 0, '166.137.156.172', 1377170300, 1, 1, 1, 1, 1, '', 'Re: Hello?', 'A', '7fc56270e7a70fa81a5935b72eacbe29', 0, '', 'xurver5k', 1, 0, 12337)BACKTRACEFILE: includes/db/mysql.phpLINE: 174CALL: dbal->sql_error()FILE: includes/functions_posting.phpLINE: 1871CALL: dbal_mysql->sql_query()FILE: posting.phpLINE: 1001CALL: submit_post()