I am using the downlords java FAF client, steam version of FA and Manjaro KDE.
I am using proton 5.0-6 to run FA and it works fine in the absence of FAF.
I haven't really played this game before so I don't now what other information might be relevant.
Failed to setup initial search path.
Program : Z:\home\heady\.faforever\bin\ForgedAlliance.exe
Cmd line arguments : /init init.lua /nobugreport /log /home/heady/.faforever/logs/game.log /gpgnet 127.0.0.1:62480 /mean 1500.0 /deviation 500.0 /savereplay gpgnet://127.0.0.1:35433/11627525/heady.SCFAreplay /country US /numgames 0
Callstack:
unavailable.
Last 100 lines of log...
warning: Running "Z:\home\heady\.faforever\bin\init.lua" failed: PERSONALSHGetFolderPath failed:
stack traceback:
[C]: in function `SHGetFolderPath'
Z:\home\heady\.faforever\bin\init.lua(144): in main chunk