Topic: Opening simpleviewer galleries in juicebox 1.2 seems broken
In Lightroom 4.2, create a simpleviewer gallery using the build-in simpleviewer plugin. This is how, I have created numerous galleries in the past couple of years.
Next, open juiceboxbuilder-pro.app (on mac), and open the newly created gallery. Notice, that no images are discovered. Some of the config options are apparently read, but the images themselves are not.