You’re missing the Template Name for the parent theme. It should look like this:
/*
Theme Name: Charlie's Repair
Theme URI: http://wordpress.org/extend/themes/toolbox/
Author: Mike Wills
Author URI: http://mikewills.me
Template: toolbox
Description: Based on the Toolbox theme from Automatic. This site is for Charlie's Repair
Version: 0.1
License: GNU General Public License
License URI: license.txt
Tags: custom-menu, sticky-post, microformats, rtl-language-support, translation-ready
This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned with others.
*/
@import url("../toolbox/style.css");
Where you have “Theme: toolbox” it needs to be “Template: toolbox”