[_ck_]

Try replacing this line #205

if ( $topics = (array) $bbdb->get_col("SELECT topic_id FROM $bbdb->topicmeta WHERE meta_key = 'rating'") ) :

with this one for 1.0 compatibility:

if ( $topics = (array) $bbdb->get_col("SELECT object_id as topic_id FROM $bbdb->meta WHERE object_type='bb_topic' AND meta_key='rating'") ) :

and use the admin menu to do a recount of ratings.