Top Rated Post Shortcode Stopped Updating

Hi, I’ve been using the following shortcode on a page to create a “top 20” list of the most popular posts.

[starrating template_id=45 rows=20 select=’post’ category=13]

This worked great for a number of months, but it looks like 3 months ago, this list stopped updating. I know there are newer postings with many votes that are not appearing in the top 20 list.

Anyone have any ideas why this would stop updating and how to fix it?

The rest of the plugin seems to be working normally. People can still vote and those votes are recorded for both old and new posts. But it’s just the “top 20” highest rated posts thing seems to be frozen in time.

Thanks,
Mark

http://wordpress.org/extend/plugins/gd-star-rating/