[opencms-dev] Cannot create complex slider or image galleries

[Bernd Schmidt]

Using OpenCMS 10.0.1

When I try to add a complex slider or an image gallery to my page, I 
can't edit them.
Using the edit button a dialog appears with the text "Your session has 
expired. Please log in again." but I am still logged in.
Also the element disappears after a reload of the site and don't show up 
in the list of used elements.

My default locale is german, but also using english as default, doesnt' 
change the behaivor.