Piotr Is there any other repository of pre-set ecosystems?
I'm not aware of such yet. I know that people save a lot of their own presets.
Piotr I found setting the new one quite time-consuming.
It depends on what you're aiming for - for eg. detailed moss distribution for a macro shot can be a lot of R&D but if you want to set new lawn, park cars, or make a new forest it's like not more than 3 minutes.
Piotr Other issue I'm having is disappearing the ecosystem form a screen after system crash.
The plants are still in RN tab but they don't show up in a model.
Is there any way to recover it?
It would be best if I could see the file as I don't have any idea what happened there. After crash can mean many things like using emergency save which can have corrupted data. What was the reason of crash would be in first place, after that file plus logs inspection. The best way to solve this would be if you'd send your file and system specs and versions to firstname.lastname@example.org