Global Illumination Gone?

I NEED HELP PLEASE

ALL my shadows on ALL my projects on ALL the different engine versions are now completely BLACK!

Changing the Indirect Light Intensity of the Directional Light has absolutely no effect… And as you know it usually boosts the shadows and indirect lighting a lot! Changing the Skylight Intensity doesn’t do anything either! It literally has no effect in the scene. The only thing that is affected by it are the Cinema Camera icons. It’s as if GI has been somehow completely disabled…

I have no idea what’s happened. I’ve deleted and reinstalled the latest version of the engine, cleaned up all my DDC folders and then opened a 1st Person default project and it’s the SAME ■■■■!

Been trying to solve it for days but no luck…

I am on Mac OS btw