Problem: Elements are visible in Preview but not in the Slide-View

Dear Community-Members,

I have the following problem with Articulate Storyline:

About a week ago I tried to translate our master file (.story). I imported the MS Word file as usual and the preview was working well (see attachment "Preview"). When I tried to edit the slides it looked like most of them were not loading (see attachment "Overview"). When going into the slides the single elements were nowhere to be found (see attachment "Slide View").

I already tried to hide and show the elements with the little eye icon, checked if there were any layers hiding the elements and tried opening various versions of the same E-Learning as well as different E-Learnings. The problem only seems to appear in our newest E-Learnings. I am currently working with version v3.50.24832.0. 

Has anyone else experienced this problem and if yes, how did you solve it?

I am very thankful for any tips and tricks.

Kind regards

Tatjana Gallinat