Can't open UE Asset Editor


I’ve all of the sudden got the problem, that any time I want to open a asset (Blueprint, StaticMesh, SoundCue, …) the asset is going to be loaded, but the additional editor screen is white and only visible in the taskbar.
I’ve all ready reinstalled the engine.
Has somebody an Idea how to solve this?

open editor

Yes, this problem occurred when opening the editor.
The problem was also solved a while ago, but I don’t remember the reason for it.