Gallery does not appear

My setup

- Drupal 7.24
- jQuery Update-Module: v1.7

Steps I've done

1. Downloaded and enabled the Drupal-Module 7.x-1.2
2. Downloaded the free library, located at /sites/all/libraries/juicebox/juicebox.js (Status report is ok)
3. Added new content type 'Gallery'
4. Added field 'image' with format 'Juicebox Gallery'
5. Created new content> CT 'Gallery' and added two images
6. The images are uploaded correctly (accessible with path on website)
7. Accessed the new content

Result

The Gallery does not appear (white/blank region), but the code is there (I've checked it with Web Dev Tools).