Disabled nDisplay plugin - now in endless crash loop

Strange problem involving nDisplay plugin.
I don’t require it for a current green screen workflow so disabled it and am now in an endless crash loop!
Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp] [Line: 3984] Failed to load UnrealEd Engine class ‘/Script/DisplayClusterEditor.DisplayClusterEditorEngine’.

How to get out of this?
Is there some other dependency on the nDisplay plugin I am not aware of?