[Plugin: Yet Another Related Posts Plugin] Exclude category broken

I can’t seem to get exclude category to work anymore. Here’s what I have in my template.

<?php if (yarpp_related) : ?>
<?php yarpp_related(array('exclude' => array('category' => 10459), 'recent' => '1 month')); ?>
<?php endif; ?>

I even tried disallowing the category in the Pool settings on YARPP with no success.

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