[Plugin: Yet Another Related Posts Plugin] SQL Syntax error in logs

I’m currently running YARPP 3.5.2 on my site, and have noticed the following errors in my error log a few times each day.

[05-Sep-2012 21:53:39] 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 ')' at line 1 for query delete from wp_yarpp_keyword_cache where ID in () made by do_action_ref_array, call_user_func_array, wp_delete_auto_drafts, wp_delete_post, do_action('delete_post'), call_user_func_array, YARPP_Cache->delete_post, YARPP_Cache_Tables->clear

Not sure if anything is breaking as a result but thought I’d mention it. Let me know if you need any further details to find the cause.

http://wordpress.org/extend/plugins/yet-another-related-posts-plugin/