Whenever I try to lock a poll, I get an error in the browser console.
General error info: Failed to load resource: the server responded with a status of 500 ()
Browser console
500 (Unknown column 'locked' in 'field list' SQL=UPDATE `#__discuss_polls_question` SET `locked`='1' WHERE `post_id`='21764')
I just checked that table and there's no 'locked' column. I'm using the latest version.