Site is gogreenglencoe.org. I'm using Genesis framework

Site is gogreenglencoe.org. I'm using Genesis framework with Patricia child theme and Genesis extender plugin. When I try to create a newsletter, I get this:
Fatal error: Call to undefined function genesis_register_sidebar() in /home/gogreeng/public_html/wp-content/uploads/genesis-extender/plugin/custom-functions.php on line 5