Showing subcategories in the category pages

I cannot for the life of me figure out what is going wrong here. I can't get subcategories to show up at all in Zen-Cart's main pages / category pages. You can see here: http://www.music-skins.com/store/index.php?main_page=index&cPath=7

I have gone into Admin > Layout Settings and changed:

Categories - Always Open to Show SubCategories - 1

What else could I possibly be missing here?? Any help is appreciated. This seems so simple but I've been stumped for hours...

If you switch to the Classic Template does the navigation work on the categories?

No such luck. Same issue. It shows up in the Categories box navigation but won't display in the main area.

Here's a screenshot: http://music-skins.com/zen-screen.jpg

Any ideas? Should I just try to re-install or something?

UPDATE: It displays the products OK but not subcategories.

What do you have set for "Configuration", "Product Listing", "Show SubCategories on Main Page while navigating"

BRILLIANT! I know it's going to seem like I didn't look hard... I could have sworn I had gone over everything. I thought that Product Listing was for the individual product page only. Thanks very much for your help. I've been pretty impressed thus far with Zen-Cart's abilities.

I remember that confused me at first - the difference between product listing and product info is not obvious until you see them both. There are a lot of terminology quirks like that in admin that I hope are rethought when the admin is rewritten in v1.6.