It seems to be working with the current proton-experimental that "depot generation" thing was broken for me upon redkit patch3 in 2024 so I guess something must have changed elsewhere since all I did was symlink in the w...
I retested, and I'm not seeing a crash, but the editor window doesn't appear to be rendering a 3D scene. I don't know how to use this program, so I don't know if that's expected behavior or not.
I'm having the same issue where it's crashing at step 2 (the official REDKit, not the playtest). I installed dotnet40 and dotnet48 and am still having the same issue (Proton Experimental and same WINE version).
Filed a bug report to wine-mono Full Proton log: [steam-2889630-mono.tar.gz](https://github.com/ValveSoftware/Proton/files/15148543/steam-2889630-mono.tar.gz)
Well... now the editor's just crashing for me now upon loading: [steam-2889630 (1).tar.gz](https://github.com/ValveSoftware/Proton/files/15052323/steam-2889630.1.tar.gz)
Once the depot is valid, creating and opening projects, and running the editor works just fine: 
@kisak-valve Tried installing dotnet40 and dotnet48 via winetricks with Arch wine-staging 8.21, and they install without issue. With those installed, the Editor completes every step without issue. Proton has seemingly ha...