I can see the product and the product images, so that's working fine. And stock management is turned off, I'm just setting up the test site for now. I can see the product thumbnails as well, in the category, but what I'm referring to is the Category Image. When you create a category, you can upload a Category Image as well, to appear above the products on the Category page. That image is not showing up, but it's a built-in feature, apparently, because it's right there in Jigoshop > Products > Categories.
What I'm trying to find though is the php hook to call that Category image. I tried installing 2 basic category image plugins, but they don't do anything for the Jigoshop pages, since those are custom posts (the code doesn't work when I add it to the jigoshop theme file) so it has to be a specific line of code for Jigoshop.
I posted on Jigoshop forums too, but the "Jigoshop Team" replied with a link to purchase premium support so I didn't get an answer from them. But even though it's a built in feature in their admin settings, they won't help me unless I pay for premium support. (I would if the project budget was open ended LOL! but I can't charge the client for something like that.)