Pro Version Gallery Themes dont show up

After installing the pro version I go to a page, add new gallery and it asks me which gallery “look” to use. When I select the one that is a grid of all the photos in that gallery then the page shows up just fine. However if I chose another “pro” theme (like the one with a large photo and smaller ones below it) and hit Update. The page shows nothing at all.

I tried disabling all plugins and trying it again and it still wont display that Pro Gallery Theme.

Any ideas?

https://www.ads-software.com/plugins/nextgen-gallery/