+1 to this issue.
Did some digging and it seems the FULLTEXT indexes are never created. Seems to be because the plugin activation hooks isn’t called. In YARPP_Core:
register_activation_hook(__FILE__, array($this, 'activate'));
__FILE__ in this case is the YARPP_Core.php file, not the plugin’s yarpp.php file. Shouldn’t it be the latter?
Perhaps moving register_activation_hook back to the yarpp.php file will fix this. Or create the FULLTEXT indexes manually:
ALTER TABLE wp_posts ADD FULLTEXT yarpp_title (post_title)
ALTER TABLE wp_posts ADD FULLTEXT yarpp_content (post_content)
And then delete the yarpp_fulltext_disabled option from wp_options (or change it to false).
Hope that helps someone.
