Child Theme Not Working?

I realize there isn't a WPMU topic but I've hit a strange point. I've read through a ton of forums on the WP blog where folks have made suggestions but none of them seem to work for me.

My child theme shows up at best:

Broken Themes

The following themes are installed but incomplete. Themes must have a stylesheet and a template.

Name	Description
child	The parent theme is missing. Please install the "tgb" parent theme.

My main theme style.css has: Theme Name: tgb
My child them css looks like:

/*
Theme Name: child
Author: Thomas Bennett
Description: Custom development theme
Version: 1.0
Template: tgb
*/

@import url('../wpdev/style.css');

body { background: #900; }

I have tried renaming my folders too...

What am I missing?