Error 256 While Launching SPT.Launcher.exe in Lutris (CachyOS)

[zhoutman]

I encountered issues while installing/launching through the primary script (as mentioned on the Discord Server), so I am attempting to install via Lutris instead. During the install, I've encountered multiple errors regarding .NET runtimes (I believe with version 4.8, but I did not record that error).

During the first install, I encountered an issue with the runtime again. I confirmed Lutris was attempting to launch with Proton instead of Wine, and I also tried manually pointing the directories to the files since the original files that the directories were pointing to in Lutris seemed to have been automatically moved in the install. This did not work.

I attempted a second install of the Lutris-Additions script, and encountered this error:

After hitting "no", the script finishes uninterrupted and as expected. When hitting "Launch" from the completed install window, I am met with this error:

I've attached the "message.txt" file given by this message below. I also went to the configuration in Lutris for SPT, and it once again points to files that do not exist. However, I am not familiar enough with Lutris to set these directories correctly.

System Options:

Any help is appreciated. Most of my game troubleshooting has been through Steam proton builds, so I am out of my depth here. No better way to learn to swim than being thrown in, I guess :\

message.txt

[ThunderArtist]

Hello, I was getting similar errors while trying this method so in the end I decided to install SPT in a Windows virtual machine and port the SPT.Launcher to work on Linux.
I made instructions and also released my Linux build. Feel free to try this method, I hope it helps :)
Instructions on how got set up SPT on Linux by using a Windows VM
SPT.Launcher Linux build