Jukebox works, sort of. The lovely big images I see in the Demo are not what happens on the site.:

1. In Drupal, manage display, Format Settings is set to Jukebox Gallery but when the wheel is clicked, under Main Image Style and Thumbnail, there is no option for JuiceBox sizes. None of the other options produce the desired effect.

2. As a result, all the images are surrounded by a huge amount of black space rather than filling the canvas.

What do I need to do to fix this?

Thanks.