@Core2000 I found a couple things for you. Your scene is set to use the Standard C4D engine. Whoops. Also, I believe your scene clouds are there, but just not in your view. Try playing with the Clouds Position settings and soon you will see a shadow creep into your scene. I dropped the Sky and Sun from Beansvision's scene and at first, it looks like it's also not working, but the entire view is in a large shadow. You can offset, reduce the number of clouds, raise their altitude, etc. to your liking.