Page stays blank after closing lightbox slide
I am running in a problem with Lightbox slides. Whenever I close a lightbox slide the page after stays blank. The lightbox slide contains a text entry which is visible on the page after closing. After closing the lightbox the previous and next buttons are still available but the rest of the page is blank. When refreshing the page the lightbox text entry is filled.
The course can be viewed at:
This happens at section H page 15/23. All fields of the notition are lightbox slides. You can freely navigate throughout the assignment with the vorige (previous) and volgende (next) button.
The course size is pretty big so I created a downloadlink at:
We are using SL2.