Comment on WordPress SEO Plugins by SEO Dave.

WordPress SEO Plugins Had a quick look at the plugins installation instructions: https://wordpress.org/plugins/wp-postratings/installation/

Did you follow those instructions about editing template files?

On a test site running WordPress 3.2 and Stallion adding the code to the single.php file works as expected.

Make sure under the Stallion Layout Options you haven’t ticked

wp_enqueue_scripts Off: Prevents WordPress from adding javascript to a site.

That would stop the WP-PostRatings plugin adding relevant javascript to the your WordPress site.

David