I have exactly the same problem with ATI RV710/M92 [Mobility Radeon HD 4350/4550] and crashes at Settings or when starting new game. KSP.19 works fine. I'm using the open source driver (Gallium3D I think), OpenGL 2.1 with Mesa 9.1.1. Installing closed source ATI driver is not an alternative due to two reasons. First that would be the "legacy" driver, which does not support Xorg .13, so not compatible with Ubuntu 12.04 or above (thanks for this AMD, I will never buy anything from you again). Second, it is possible to downgrade Xorg, install the ATI drive and start the game, but the game is very slow (i.e. for KSP .19 the game is muuuuch faster with the Gallium driver!). I admit, the f**** ATI is the guilty one, but anyway, we should find out how to restore the situation what we had with the previous version (hacking mesa/gallium/mono/KSP or anything! ) There was a previous answer from dodorian, saying that installing "mono-complete" helped him. I have installed it (sudo apt-get install mono-complete), but that didn't help. (Can't we hack somehow to use the installed mono? "mono KSP.exe" does't help.) Once I have upgraded my MESA to 9.2.0 (unstable one), no difference (actually, openGL remained what it was: v2.1). LC_ALL trick was checked, doesn't help. (Actually, I don't think that the problem is there, but someone said this on a steam thread.) I made the files you asked for in a directory, where KSP was freshly extracted. I have just started the game and clicked on Settings. Console output: enyedi@Gizi4:~/KSP_linux.20$ ./KSP.x86 Set current directory to /home/enyedi/KSP_linux.20 Found path: /home/enyedi/KSP_linux.20/KSP.x86 Mono path[0] = '/home/enyedi/KSP_linux.20/KSP_Data/Managed' Mono path[1] = '/home/enyedi/KSP_linux.20/KSP_Data/Mono' Mono config path = '/home/enyedi/KSP_linux.20/KSP_Data/Mono/etc' /dev/input/js0: driver version: 2.1.0 (20100) /dev/input/js0: fd 3, buttons 0, axes 3, name ST LIS3LV02DL Accelerometer /dev/input/js0: axis 0: raw 0, mapped 0.000000 /dev/input/js0: axis 1: raw 0, mapped 0.000000 /dev/input/js0: axis 2: raw -14304, mapped 0.000000 Aborted (core dumped) Files: https://docs.google.com/file/d/0B8qABXdLDLJDdE9sUFlGdzdfVTg/edit https://docs.google.com/file/d/0B8qABXdLDLJDR29SNFQxUjZncVE/edit I am using a freshly installed (I have reinstalled that today) Ubuntu 13.4 64 bit, but running KSP.x86.