I downloaded IH2 today on an existing site with products and everthing seems to look as it should on the admin side - (menu, product listings, additional images). However, on the live site, no additional images are showing up. I've tried reloading them, but no luck.

Originally, I loaded one image size(the largest) and let the admin tool resize to the necessary sizes. So all my products are named(for example) shoe.jpg, shoe_back.jpg, shoe_front.jpg, etc.

All images show in the admin side, but those with the _tags.jpg on the end don't appear in the site, and there is no changes to how the pop-up displays. I'm sure it's a simple fix, but there's such a mountain of information in this thread I'm going blind searching for the answer....Any help, please?