I'm using WP 3.5.2 with a WooTheme and Woocommerce 1.6.6. (because that's the only version of Woocommerce that's compatible with the theme).
I installed your plugin a few minutes ago, and already made a successful tweak, to get 2 tabs...actually works! ;)
However, I also managed to delete/remove the description inside the original wordpress-tab, through the file "description.php" in /wp-content/plugins/woocommerce/templates/single-product/tabs/, but not inside your the custom-products-tab-lite...
How do I do that?
Check out the tabs on my website: TABS
(it's in Swedish though...hope you understand anyways...)