Compatibility Report

• Name of the game with compatibility issues: Insurgency: Sandstorm
• Steam AppID of the game: 581320

System Information

• GPU: GTX 1070
• Driver/LLVM version: LLVM 13.0.1 / nvidia 470.103.01
• Kernel version: 5.15.26
• Link to full system information report as Gist:
• Proton version: 1646943044 experimental-7.0-20220310
  steam-581320.log

I confirm:

• [ ] that I haven't found an existing compatibility report for this game.
• [ ] that I have checked whether there are updates for my system available.

Symptoms

Upon launching Insurgency: Sandstorm, an EasyAntiCheat splash screen will pop up saying "Launch Error, Failed to load the anti-cheat module" and at this point the only way forward is to click the "Exit" button below the message.

I've tackled with this issue for about a week now and have found a probable source of the problem:
easyanticheat_linux_x86_x64.eac.metadata and easyanticheat_linux_x86_x64.eac are missing from ~/.steam/steam/steamapps/compatdata/581320/pfx/drive_c/users/steamuser/AppData/Roaming/EasyAntiCheat/eb330869cd5f4881b0a8a0220a8c284d/2324da9a1c0341eea4cf43c070760c75/.

From my understanding these files should be present after the EAC installer has done it's job when Steam is running the installscript on a fresh prefix, but they never appear, thus causing EAC to bail on game start.

To try to solve this issue, I've tried the following:

• Move Proton Experimental, Proton EasyAntiCheat Runtime and Insurgency:Sandstorm to a ext4 filesystem and reinstall all these titles & tools through Steam.
• Opt into Steam Experimental Bleeding Edge beta branch
• Try Proton 7.0 & GE-Proton7-9
• Wipe the Proton prefix & shadercache folders numerous times
• Copy the missing easyanticheat_linux_x86_x64.eac.metadata and easyanticheat_linux_x86_x64.eac on to my system from my friend's PC, but EAC will delete these files on game start.
• Copy the whole Proton prefix from my friend's computer and place into ~/.steam/steam/steamapps/compatdata/
• Attempt to invoke the EasyAntiCheat_EOS_Setup.exe with Proton Experimental manually, only to be faced by an empty command prompt which will close shortly after.
• Install Insurgency: Sandstorm on my laptop that resulted in the same issue as in this Issue Ticket.

Reproduction

• Install Proton EasyAntiCheat Runtime, Proton Experimental and Insurgency: Sandstorm
• Proceed to launch Insurgency: Sandstorm

I will include service.log, anticheatlauncher.log and loader.log from ~/.steam/steam/steamapps/compatdata/581320/pfx/drive_c/users/steamuser/AppData/Roaming/EasyAntiCheat
service.log
anticheatlauncher.log
loader.log

Is this the right place to ask for support or report the issue?
I'm not very familar with Github.

Cheers.