Think I figured it out. I selected for default and cleared cache on a secondarily installed RocketThemes theme. WP or Gantry was looking for a style.css in the themes folder with theme headers. It somehow got corrupted or locked. It should be accessible in the theme's folder and have this inside for the specific theme. Hope this helps someone else in the future.
/*
Theme Name: Vermilion
Theme URI: http://www.rockettheme.com
Description: RocketTheme Vermilion Theme for Wordpress
Version: 1.0
Author: RocketTheme, LLC
Author URI: http://www.rockettheme.com
*/