I'm running Zero-K on linux through steam. It worked yesterday but now when I run the game, a small steam window opens that says "syncronizing steam cloud", it closes (cloud status: up to date) and then nothing happens. Here's what it says in the terminal:

/bin/sh\0-c\0/home/Najarn/.steam/ubuntu12_32/reaper SteamLaunch AppId=334920 -- '/home/Najarn/.steam/steam/steamapps/common/Zero-K/Zero-K_linux64.sh'\0
Game process added : AppID 334920 "/home/Najarn/.steam/ubuntu12_32/reaper SteamLaunch AppId=334920 -- '/home/Najarn/.steam/steam/steamapps/common/Zero-K/Zero-K_linux64.sh'", ProcID 19655, IP 0.0.0.0:0
chdir /home/Najarn/.steam/steam/steamapps/common/Zero-K
ERROR: ld.so: object '/home/Najarn/.steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
GameAction [AppID 334920, ActionID 10] : LaunchApp changed task to WaitingGameWindow with ""
ERROR: ld.so: object '/home/Najarn/.steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
GameAction [AppID 334920, ActionID 10] : LaunchApp changed task to Completed with ""
pid 19657 != 19656, skipping destruction (fork without exec?)
Game process removed: AppID 334920 "/home/Najarn/.steam/ubuntu12_32/reaper SteamLaunch AppId=334920 -- '/home/Najarn/.steam/steam/steamapps/common/Zero-K/Zero-K_linux64.sh'", ProcID 19655
ThreadGetProcessExitCode: no such process 19656
Uploaded AppInterfaceStats to Steam

Can anyone help me figure this out?

Both my son and I have the same problem. Steam downloaded a ZeroK update and not it won't start at all on his or my pcs. We both run Arch based distros. Was working fine before latest update.

I see in the folder there is a Zero-K_linux64 and a Zero-K_linux64.sh both get an error when trying from cli

I tried installing now from the AUR ie not the Steam version and it also crashes. Though I'm not sure if the Linux version always used Mono? Anyways for now my son just enabled the Proton version. Running ZeroK on Windows for my ends up in a complete Windows crash and reboot so I only play games on Linux.

"dos2unix Zero-K_linux??.sh" after locating that file, as suggested here, solves the issue but I think it can happen again in next update
:(

It download to 80% And stops when i start a matchmaking game

Just did an update 40ish MiB, also did a verify. Unfortunately still doesn't start. As a matter of interest whats changed, my son was saying earlier that it was working fine a week ago. Also apparently he can't play properly through Proton alt + tabbing messing up the hotkeys or something.

I appreciate the fast response, just wondering what could have changed in the recent builds that break on Linux, after all we have had updates for the last year without issues.

It works now. Thanks!

Can confirm; yesterday the game worked fine (modulo having to fix the script),
after the update it doesn't start at all. Stacktrace is identical to the one Lemonised posted above.

My little grain of salt
Steam says it needs to validate a game file every time you try to start your game on GNU/Linux.



It's always a single file, independently of the number of times you try to start the game (unsuccessfuly).

Steps to reproduce:
1. Validate game files. A file may or may not have to be validated.
2. Try to play the game.
3. Validate again. Now a file WILL need to be validated.

It always happens to me.

LOL Installing libgdiplus solved it for me

Looking at the first line of the stacktrace thrown when executing Zero-K_linux64.sh after converting it's line endings with dos2unix gave me the solution.

The stack trace

It clearly indicated that libgdiplus.so.0 was missing from my system.