Version / Build: v. 18.104.22.168286
Rhino Version / Rhino 6 SR35 2021-8-10 (Rhino 6, 6.35.21222.17001
System: Win 10
Vray: Vray for rhino 6 5.20.02 02 12064242)
I used these 3ds max models: https://globeplants.com/products/bundle-13-grass-lawn-3d-model
Exported them from 3ds max to rhino using Vrayscene export
Loaded them to Rhino as vray proxies
Then scatered them with rhino nature, which worked fine, better then expected. Also the cleanup image after rendering also took lees time then with the models provided in the Rhino Nature library.
But As I'm trying to save the preset the error pops up.
I tried closing down the file and opening and trying to save it again, and a different error poped up.