UPDATE: Every editor in UE4 is broken! I cannot open the Material editor, The Mesh editor, The Blueprint editor etcetera?
I got this error in every map or file i open in UE4. It seems this error started after many bleuprints needed to be recompiled trough a yellow loading bar? Now when i open blueprint the tab appears in my windows bar at the bottom, but i can’t open it. Resaving is also not working? What can i do now? It seems my whole UE4 is infected by this error.