Great, you confirm my suspicion.

i'll try what you suggest when I got some time (i'll need to move other games too)

Yes sir.
And copy the "run" file in the good folder.
I changed de path to be the one used by the flatpak version of steam. But maybe i forgot something ?

If you want to see some logs, just tell me which one and how to get it

Thanx for your help

Hi everyone.

I got few monthes ago a new computer which is best suited to play SupComm : FA.

I installed Steam on my new computer and have no problem to run forged alliance from steam.
But i can't launch a game or a replay from FAF.
I installed FAF and even try the last version recently (1.6). Faf run without any problems, but when i launch a game from the program, i get an error :

java.lang.RuntimeException: Forged Alliance Crashed with exit code 2. See  for more information
	at com.faforever.client.game.GameService.lambda$spawnTerminationListener$43(GameService.java:676)
	at com.faforever.client.game.GameService$$Lambda$2943/0x000000006829d988.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

My skills are limited, and i can't find a way to fix that problem.
I was wondering if it's because i installed the Flatpak Steam on my linux mint, instead of the regular one. Anyone use flatpak version of steam ?