I just noticed, that there is an option to set a "Display Page Template" for images in document library.
I tried to set it to a display page, but I only get a "not found" error.
http://localhost:8080/web/guest/a/34382
1) Create a display page "test"
2) Add a fragment, mag it to the preview image of a document
3) In DL, upload an image
4) Set the display page to "test".
5) Click on the image title in document libraray
Expected result: Display page shows preview image
Actual result: Error page "not found"
