Terminal output

primusrun ./KSP.x86_64
Set current directory to /home/zero/Kerbal Space Program
Found path: /home/zero/Kerbal Space Program/KSP.x86_64
Mono path[0] = '/home/zero/Kerbal Space Program/KSP_Data/Managed'
Mono config path = '/home/zero/Kerbal Space Program/KSP_Data/Mono/etc'
Preloaded 'ScreenSelector.so'
Preloaded 'libCSteamworks.so'
Preloaded 'libkeyboard.so'
Preloaded 'liblingoona.grammar.kerbal.so'
Preloaded 'libsteam_api.so'
Unable to preload the following plugins:
        ScreenSelector.so
        libCSteamworks.so
        libkeyboard.so
        liblingoona.grammar.kerbal.so
        libsteam_api.so
Player data archive not found at `/home/zero/Kerbal Space Program/KSP_Data/data.unity3d`, using local filesystem
Logging to /home/zero/.config/unity3d/Squad/Kerbal Space Program/Player.log
[S_API FAIL] SteamAPI_Init() failed; no appID found.
Either launch the game from Steam, or put the file steam_appid.txt containing the correct appID in your game folder.

Native stacktrace:

        /home/zero/Kerbal Space Program/KSP_Data/Mono/x86_64/libmono.so(+0x92406) [0x7fb10c9b5406]
        /usr/lib/libpthread.so.0(+0x11a7f) [0x7fb11827da7f]
        /usr/lib/libc.so.6(gsignal+0x10b) [0x7fb1173a886b]
        /usr/lib/libc.so.6(abort+0x128) [0x7fb11739340d]
        ./KSP.x86_64() [0xa3e36b]
        /home/zero/Kerbal Space Program/KSP_Data/Mono/x86_64/libmono.so(+0xd153a) [0x7fb10c9f453a]
        /home/zero/Kerbal Space Program/KSP_Data/Mono/x86_64/libmono.so(+0x3507e) [0x7fb10c95807e]
        /usr/lib/libpthread.so.0(+0x11a7f) [0x7fb11827da7f]
        /usr/lib/dri/i965_dri.so(+0x1c7ff1) [0x7fb110ee1ff1]
        /usr/lib/dri/i965_dri.so(+0x3d5bfc) [0x7fb1110efbfc]
        /usr/lib/primus/libGL.so.1(+0x26424) [0x7fb113989424]
        /usr/lib/libpthread.so.0(+0x7074) [0x7fb118273074]
        /usr/lib/libc.so.6(clone+0x3e) [0x7fb11746a53e]

Debug info from gdb:

I refuse to debug myself!
No threads.

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================