[Plugin: Yoast wordpress seo]

I’m trying to install Yoast on my site which is running the new 3.8 version of WordPress, but I keep getting – Fatal error: Call to undefined function schedule_yoast_tracking() in /customers/5/9/4/(mydomain.com)/httpd.www/wp-content/plugins/wordpress-seo/inc/wpseo-non-ajax-functions.php on line 29

I have no other plugins activated on this site yet and have tried uploading the developers version of Yoast but it comes up with the same error. Could any one help me out please?