Getting the variant dropdown to update the featured image with the Atlantic theme and the Variant Images app by Caroline Elisa

I have the Variant Images app working so that you can use the dropdown to change the featured image but am unable to get the thumbnails to update the dropdown.

I have seen this, but it doesn't work for me using the Atlantic theme:

https://gist.github.com/carolineschnapp/9495805

I also tried what was recommended to Minimal theme users, targeting the exact set of images as Atlantic also holds them in other places:

Replacing `thumbnails = $('img[src*="/products/"]').not(':first');` with `thumbnails = $('#product-area img[src*="/products/"]').not(':first');`

Any other tips?

Thanks!