First the way, how I got there: I tried compiling the nightly on my system, copying the old data-folder into the new compiled one, which lead to crashing nightly. For getting a clean data-folder, I removed both, the nightly one and my usual one, replacing it with the clean one from the nightly-source-pack. Copying vanilla-files onto it, and now I see that (attachment). The area in front of the avenger or whatever craft you land with, keeps being dark. Even when you move a soldier or tank, it's not updated, keeping black even then. Reinstalling via ubuntu repository didn't change anything. Has anyone an idea of what is happening?