Bump Thread

[Animal]

have this and the random thread and now i get these errors

when clicking on the index

MySQL error: 1054
Unknown column 't.lastpostbump' in 'order clause'
Query: SELECT t.*, (t.totalratings/t.numratings) AS averagerating, t.username AS threadusername, u.username FROM mybb_threads t LEFT JOIN mybb_users u ON (u.uid = t.uid) WHERE t.fid='19' AND (t.visible='1' OR t.visible='0') ORDER BY t.sticky DESC, t.lastpostbump DESC LIMIT 0, 20

and when trying to post this

MySQL error: 1054
Unknown column 'lastpostbump' in 'field list'
Query: UPDATE mybb_threads SET lastpostbump='1214259142' WHERE tid=37

do i need to create a table ? and if so how and what kind ? thanks

also when i try to switch of the bump thread plug in get a similar error