Version form August 20, 2007 does not work at all

I just upgraded to this last version and found bunch of problems. I don't know am I supposed to open separate issues for each of them.

1. First and most important - it does not send any private message.
2. Inbox does not show any messages.
3. When selecting any other folder it also does not show any content. The only folder that shows its content is "Sent messages".

Log shows message:

Table 'db.privatemsg_block_user' doesn't exist query: SELECT COUNT(*) FROM privatemsg_block_user WHERE author = 608 AND recipient = 608 in /home/mysite/public_html/includes/database.mysql.inc on line 155.