GD Star Rating Error message

My client’s site is throwing off the following error:
“[18-Jun-2013 16:09:15] WordPress database error Unknown column ‘Array’ in ‘where clause’ for query select * from wp_gdsr_votes_log where vote_type = ‘multis’ and comment_id = Array made by do_action_ref_array, call_user_func_array, akismet_delete_old, do_action(‘delete_comment’), call_user_func_array, GDStarRating->comment_delete, GDSRDBMulti->delete_by_comment”

What should we do to stop this?
When do you expect to release an update to this product?

Thank you.

http://wordpress.org/extend/plugins/gd-star-rating/