Don't worry about it. I'm just glad you're willing to help! smile

In the meantime I resinstalled 3DGS from scratch on my PC. Did not change anything.

Tried your solution: yes, setting "Lit maps only" to "off" helps. Now I get ambient and sunlight. However, I only get grey ambient no matter which ambient color I choose.

And if I add a light in there, I get no sun at all. confused

Thanks for your help! smile