getting this message: Fatal error: Call to undefined function get_blog_details() ... on line 723

Fatal error: Call to undefined function get_blog_details() in /home/fthswiki/public_html/wp-content/plugins/user-reports/user-reports.php on line 723

I just installed user reports and on a single WP site (not network). I've installed the other two required plugins.

site is at: http://70.38.31.166/~fthswiki