Attribute Pages Are Not Working

Plugin Version 0.4

I was able to create custom attribute that describes the color of the product. When through each product and added the color attribute. (http://i.imgur.com/GjnNIL7.jpg?1)

I also enabled the attribute under menu status (http://i.imgur.com/OIZV3cr.jpg?1)

Add the menu item and the error I get. (http://i.imgur.com/Fa4AEdV.jpg?1)

https://wordpress.org/plugins/woocommerce-attributes-menu-manager/