[Plugin: Yet Another Related Posts Plugin] YARPP causing blank page when saving menu configuration

after testing all my plugins, YARPP is causing the menu editor in wordpress to pull up a blank page ONLY when saving the menu. have no idea why or what could be causing this. for now, im just deactivating YARPP when i make menu changes.

using 3.5.1 and tested on google chrome and firefox on a mac.

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