can't delete the last post of a thread

[soteke]

If a try to delete the last post (it's the only post) of a thread I get the following errors which make that I can't delete the post.

Errors displayed:

WordPress database error: [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 1] SELECT username FROM bb_users WHERE user_id =

WordPress database error: [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 ' topic_last_poster_name = , topic_last_post_id = , topic_post] UPDATE bb_topics SET topic_time = , topic_last_poster = , topic_last_poster_name = , topic_last_post_id = , topic_posts = topic_posts - 1 WHERE topic_id = 1

Warning: Cannot modify header information - headers already sent by (output started at /home/content/s/o/t/soteke/html/bbpress/bb-includes/db.php:82) in /home/content/s/o/t/soteke/html/bbpress/bb-admin/delete-post.php on line 23

Is there any way to delete a whole thread?

ok, I updated to the last version, and first got a foreach() error but then I wrote a post and deleted it, and the thread finally was deleted.