I am running v1.5 and these are the problems I'm noticing:

First, in the instructions, "Delete the files in admin/includes/boxes/extra_boxes/" is not necessary. I don't think those folders exist in v1.5.

Next, what is up with the vertical alignment?? I tried going to Images > Product Info - Number of Additional Images per Row and changing it to something other than 1. But it still doesn't work.

And finally, the enlarge image option isn't available?? What good are these additional images if I can't enlarge them?

I will tinker with this code a little more but I'm very close to uninstalling...