Database issues since last update

Here's the log showing the error... please advise.

[Fri Nov 15 22:57:22 2013] [error] [client IP ADDRESS] database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') /* From [******.com/wp-cron.php?doing_wp_cron=1384556241.621558904647827' at line 1 for query DELETE FROM wp_32_subscriptions_log_table WHERE id IN () /* From [*******.com/wp-cron.php?doing_wp_cron=1384556241.6215589046478271484375] in [/nas/wp/www/cluster-1272/******/wp-content/plugins/subscribe-by-email/model/model.php:568] */ made by require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, Incsub_Subscribe_By_Email->maybe_delete_logs, Incsub_Subscribe_By_Email_Model->delete_log