Proper Map making guide

Hi and thanks for your reply again!
I will try some other options and recreate it a few times from 0.
Tried that already yesterday, and somehow (even after deleting the physical files on the hard drive), it wont allow me to create a new landscape within a new map in the editor in the same mod-folder which I’ve used before. Really weird again … It just doesnt create a landscape, not even a very small one. Level streaming was activated beforehand in the level, because thats how TheIsland map did it (they do have a separate level layer for the landscape which is not the persistent top one).
This might be some weird caching problem or at least related to it, I will test further with a new mod directory after work when im home. This time ill try to add all the present generic post process volumes (weather, time, etc.) from TheIsland as well, but that cant possibly be the cause for this problem.