I saw a post that it happends on mac. It happends on linux too: Here my console output:
[2014.10.27-03.49.41:004][105]Cmd: BRUSH ADD SELECTNEWBRUSH
[2014.10.27-03.50.07:641][286]LogContentBrowser:Verbose: The content browser source was changed by the sources view to ‘/Game’
Signal 11 caught.
EngineCrashHandler: Signal=11
[2014.10.27-03.50.16:468][345]LogCrashTracker:
[2014.10.27-03.50.16:468][345]LogLinux: === Critical error: ===
Unhandled Exception: SIGSEGV: invalid attempt to access memory at address 0x00000008
[2014.10.27-03.50.16:468][345]LogLinux: Fatal error!
[Callstack] 02 0x00007ffff7383e95 ReportCrash(FLinuxCrashContext const&)
[Callstack] 03 0x0000000000420f6f EngineCrashHandler(FGenericCrashContext const&) [/home/yaakuro/UnrealEngine/Engine/Source/Runtime/Launch/Private/Linux/LaunchLinux.cpp, line 30]
[Callstack] 04 0x00007ffff73869cc PlatformCrashHandler(int, siginfo_t*, void*)
[Callstack] 05 0x00007ffff7bcc340 /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340) [0x7ffff7bcc340]
[Callstack] 06 0x00007ffff769de6c /home/yaakuro/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-Core.so(+0x4c3e6c) [0x7ffff769de6c]
[Callstack] 07 0x00007ffff7614cf2 /home/yaakuro/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-Core.so(+0x43acf2) [0x7ffff7614cf2]
[Callstack] 08 0x00007ffff75c34f1 /home/yaakuro/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-Core.so(SDL_GL_MakeCurrent+0x27) [0x7ffff75c34f1]
[Callstack] 09 0x00007fffd707399b FScopeContext::FScopeContext(FPlatformOpenGLContext*)
[Callstack] 10 [2014.10.27-03.50.16:468][345]LogExit: Executing StaticShutdownAfterError
Starting …/…/…/Engine/Binaries/Linux/CrashReportClient