I've installed both versions of the game available and both of them fail in starting with an "exit code 1". I don't know what that means and I want to play multiplayer FTL right this second! 

Try asking on discord.

Maybe someone there will be able to help you.

Other option - just google it ;)

Google was useless and I'd ask on Discord if knew what I was doing. I'll try the ol' slap the keyboard technique.