Snapshot: wp-cron/SQL Syntax Error

Whenever I run manually or cron runs automatically a Snapshot I have configured to generated a backup and send it to GreenQloud, I receive the following error in my server logs:

[Sun Dec 15 10:31:20 2013] [error] [client] WordPress 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 […/wp-cron.php?doing_wp_cron=1387103480.0937540531158447265625' at line 1 for query SELECT ID FROM wp_users WHERE ID IN () /* From […/wp-cron.php?doing_wp_cron=1387103480.0937540531158447265625] in [/…/wp-content/plugins/snapshot/snapshot.php:2957] */ made by do_action_ref_array, call_user_func_array, WPMUDEVSnapshot->snapshot_backup_cron_proc, WPMUDEVSnapshot->snapshot_ajax_backup_init

As with my last thread regarding Snapshot, this is an issue I am having on WP Engine. Please let me know if there is any more information that would be of use in troubleshooting.