Unexpected error occurred. If you're running the latest version of the game you can help us solve the problem by posting the contents of the log file on the Factorio forums. yadayada...
After dismissing the dialog Factorio starts automatically and I'm on the new build (0.17.55 (build 46064, win64, alpha)) and everything resumes as normal. I can load and play a game, restart Factorio etc. No errors.
This is the second time it happened, both times it crashed after applying the new update via automatic update.
Here is the logfile:
logfile
0.003 2019-07-09 22:50:10; Factorio 0.17.54 (build 46015, win64, alpha)
0.003 Operating system: Windows 10 (version 1803)
0.003 Program arguments: "C:\Program Files\Factorio\bin\x64\factorio.exe"
0.003 Read data path: C:/Program Files/Factorio/data
0.003 Write data path: C:/Users/<private>/AppData/Roaming/Factorio [48941/229433MB]
0.003 Binaries path: C:/Program Files/Factorio/bin
0.031 System info: [CPU: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz, 4 cores, RAM: 4324/8142 MB, page: 6213/9998 MB, virtual: 4248/134217727 MB, extended virtual: 0 MB]
0.032 Display options: [FullScreen: 1] [VSync: 0] [UIScale: automatic (100.0%)] [Native DPI: 1] [Screen: 255] [Special: 0000] [Lang: en]
0.048 Available displays: 1
0.049 [0]: \\.\DISPLAY1 - AMD Radeon HD 7900 Series {0x80005, [0,0], 2560x1440, 32bit, 60Hz}
0.104 [Direct3D11] Display: 0, Output: 0, DisplayAdapter: 0, RenderingAdapter: 0; d3dcompiler_47.dll
0.174 Initialised Direct3D[0]: AMD Radeon HD 7900 Series; id: 1002-679a; driver: aticfx64.dll 25.20.15031.9002
0.174 D3D Feature Level: 11.1, DXGI 1.5+, SwapChain: 3,flip-discard,-,-,-,none
0.175 [Local Video Memory] Budget: 2594MB, CurrentUsage: 0MB, Reservation: 0/1373MB
0.175 [Non-Local Vid.Mem.] Budget: 3664MB, CurrentUsage: 0MB, Reservation: 0/1933MB
0.175 Tiled resources: Tier 1
0.175 Unified Memory Architecture: No
0.175 BGR 565 Supported: Yes
0.175 MaximumFrameLatency: 3, GPUThreadPriority: 0
0.232 Desktop composition is active.
0.232 Graphics settings preset: very-high
0.232 Dedicated video memory size 3052 MB
0.232 Graphics options: [Graphics quality: high] [Video memory usage: all] [Light scale: 25%] [DXT: high-quality]
0.232 [Max load threads: 32] [Max texture size: 0] [Tex.Stream.: 0] [Rotation quality: normal] [Color: 32bit]
0.269 DSound: Starting _dsound_update thread
0.269 DSound: Enter _dsound_update; tid=12204
0.612 Loading mod core 0.0.0 (data.lua)
0.799 Loading mod base 0.17.54 (data.lua)
1.496 Loading mod base 0.17.54 (data-updates.lua)
1.642 Checksum for core: 2486543994
1.642 Checksum of base: 2542100768
2.000 Loading sounds...
4.443 Info PlayerData.cpp:67: Local player-data.json available, timestamp 1562621294
4.443 Info PlayerData.cpp:74: Cloud player-data.json unavailable
4.606 Initial atlas bitmap size is 16384
4.654 Created atlas bitmap 16384x16376 [none]
4.658 Created atlas bitmap 16384x11084 [none]
4.659 Created atlas bitmap 8192x3884 [decal]
4.661 Created atlas bitmap 16384x4320 [low-object, linear-minification]
4.662 Created atlas bitmap 8192x3664 [mipmap, linear-minification, linear-magnification, linear-mip-level]
4.663 Created atlas bitmap 16384x6880 [terrain, mipmap, linear-minification, linear-mip-level]
4.663 Created atlas bitmap 4096x1600 [smoke, mipmap, linear-minification, linear-magnification]
4.664 Created atlas bitmap 4096x1704 [icon, not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level]
4.664 Created atlas bitmap 2048x192 [icon-background, not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level, ]
4.664 Created atlas bitmap 8192x1496 [alpha-mask]
4.668 Created atlas bitmap 16384x12632 [shadow, linear-magnification, alpha-mask]
4.668 Created atlas bitmap 8192x2352 [shadow, mipmap, linear-magnification, alpha-mask]
4.678 Texture processor created (2048). GPU accelerated compression Supported: yes, Enabled: yes/yes. Test passed. YCoCgDXT PSNR: 35.83, BC3 PSNR: 33.82
12.283 Parallel Sprite Loader initialized (threads: 3)
23.866 Sprites loaded
23.880 Generated mipmaps (4) for atlas [3] of size 16384x4320
23.891 Generated mipmaps (3) for atlas [4] of size 8192x3664
23.902 Generated mipmaps (3) for atlas [5] of size 16384x6880
23.913 Generated mipmaps (3) for atlas [6] of size 4096x1600
23.924 Generated mipmaps (4) for atlas [7] of size 4096x1704
23.936 Generated mipmaps (3) for atlas [11] of size 8192x2352
23.936 Custom mipmaps uploaded.
23.953 Custom inputs active: 0
24.035 Factorio initialised
24.039 Info HttpSharedState.cpp:54: Downloading https://updater.factorio.com/updater/ge ... iVersion=2
24.765 1 packages available to download (experimental updates enabled).
26.610 Info HttpSharedState.cpp:54: Downloading https://updater.factorio.com/updater/ge ... iVersion=2
48.059 Quitting: user-quit.
48.135 DSound: Stopping voice
48.135 DSound: Joining thread
48.141 DSound: Exit _dsound_update; tid=12204
48.141 DSound: Waiting for voice to stop ... signaled
48.141 DSound: Joined thread
48.141 DSound: Destroying thread
48.141 DSound: Thread destroyed
48.141 DSound: Releasing buffer
48.141 DSound: Voice stopped
48.141 DSound: Deallocating voice
48.141 DSound: Deallocated voice
48.388 Goodbye
0.000 2019-07-09 22:51:01; Factorio 0.17.54 (build 46015, win64, alpha)
0.000 Operating system: Windows 10 (version 1803)
0.000 Not rotating logs.
0.000 Info Updater.cpp:708: Starting updater
0.000 Info Updater.cpp:267: Applying update C:\Users\<private>\AppData\Roaming\Factorio\temp\core-win64-0.17.54-0.17.55-update.zip
3.384 Info Updater.cpp:718: Starting updated game
3.384 Error CrashHandler.cpp:592: Received SIGSEGV
Factorio crashed. Generating symbolized stacktrace, please wait ...
c:\cygwin64\tmp\factorio-build-xhfnfr\libraries\stackwalker\stackwalker.cpp (924): StackWalker::ShowCallstack
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\logger.cpp (537): Logger::writeStacktrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\logger.cpp (544): Logger::logStacktrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\crashhandler.cpp (181): CrashHandler::writeStackTrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\crashhandler.cpp (601): CrashHandler::SignalHandler
minkernel\crts\ucrt\src\appcrt\misc\exception_filter.cpp (219): _seh_filter_exe
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl (304): `__scrt_common_main_seh'::`1'::filt$0
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FF7A84743A8)
00007FF7A84743A8 (Factorio): (filename not available): __C_specific_handler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0B01F7DD)
00007FFE0B01F7DD (ntdll): (filename not available): _chkstk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0AF8D856)
00007FFE0AF8D856 (ntdll): (filename not available): RtlWalkFrameChain
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0B01E70E)
00007FFE0B01E70E (ntdll): (filename not available): KiUserExceptionDispatcher
c:\cygwin64\tmp\factorio-build-xhfnfr\src\globalcontext.cpp (839): GlobalContext::clearResources
c:\cygwin64\tmp\factorio-build-xhfnfr\src\globalcontext.cpp (845): GlobalContext::~GlobalContext
c:\cygwin64\tmp\factorio-build-xhfnfr\src\updater.cpp (727): Updater::autoUpdateStage2
c:\cygwin64\tmp\factorio-build-xhfnfr\src\main.cpp (1151): wmain
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl (288): __scrt_common_main_seh
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE084C4034)
00007FFE084C4034 (KERNEL32): (filename not available): BaseThreadInitThunk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0AFF3691)
00007FFE0AFF3691 (ntdll): (filename not available): RtlUserThreadStart
Stack trace logging done
5.851 C:\Users\<private>\AppData\Roaming\Factorio\temp\Factorio.exe
5.851 C:\WINDOWS\SYSTEM32\ntdll.dll
5.851 C:\WINDOWS\System32\KERNEL32.DLL
5.851 C:\WINDOWS\System32\KERNELBASE.dll
5.851 C:\WINDOWS\SYSTEM32\apphelp.dll
5.851 C:\WINDOWS\System32\WLDAP32.dll
5.851 C:\WINDOWS\System32\ucrtbase.dll
5.851 C:\WINDOWS\System32\GDI32.dll
5.851 C:\WINDOWS\System32\gdi32full.dll
5.851 C:\WINDOWS\System32\msvcp_win.dll
5.851 C:\WINDOWS\System32\USER32.dll
5.851 C:\WINDOWS\System32\win32u.dll
5.851 C:\WINDOWS\System32\ole32.dll
5.851 C:\WINDOWS\System32\combase.dll
5.851 C:\WINDOWS\System32\RPCRT4.dll
5.851 C:\WINDOWS\System32\bcryptPrimitives.dll
5.851 C:\WINDOWS\System32\sechost.dll
5.851 C:\WINDOWS\System32\PSAPI.DLL
5.851 C:\WINDOWS\System32\SHELL32.dll
5.851 C:\WINDOWS\System32\msvcrt.dll
5.851 C:\WINDOWS\SYSTEM32\WINMM.dll
5.851 C:\WINDOWS\WinSxS\amd64_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.17134.829_none_2c31982c8af433a3\gdiplus.dll
5.851 C:\WINDOWS\System32\cfgmgr32.dll
5.851 C:\WINDOWS\System32\shcore.dll
5.851 C:\WINDOWS\System32\windows.storage.dll
5.851 C:\WINDOWS\System32\advapi32.dll
5.851 C:\WINDOWS\SYSTEM32\winmmbase.dll
5.851 C:\WINDOWS\System32\shlwapi.dll
5.851 C:\WINDOWS\System32\kernel.appcore.dll
5.851 C:\WINDOWS\System32\profapi.dll
5.851 C:\WINDOWS\System32\powrprof.dll
5.851 C:\WINDOWS\System32\FLTLIB.DLL
5.851 C:\WINDOWS\System32\IMM32.dll
5.851 C:\WINDOWS\System32\OLEAUT32.dll
5.851 C:\WINDOWS\System32\WS2_32.dll
5.851 C:\WINDOWS\System32\CRYPT32.dll
5.851 C:\WINDOWS\System32\MSASN1.dll
5.851 C:\WINDOWS\System32\WINTRUST.dll
5.852 C:\WINDOWS\System32\imagehlp.dll
5.852 C:\WINDOWS\SYSTEM32\IPHLPAPI.DLL
5.852 C:\WINDOWS\SYSTEM32\DSOUND.dll
5.852 C:\WINDOWS\SYSTEM32\VERSION.dll
5.852 C:\WINDOWS\SYSTEM32\SspiCli.dll
5.852 Error Util.cpp:97: Unexpected error occurred. If you're running the latest version of the game you can help us solve the problem by posting the contents of the log file on the Factorio forums.
Please also include the save file(s), any mods you may be using, and any steps you know of to reproduce the crash.
0.003 Operating system: Windows 10 (version 1803)
0.003 Program arguments: "C:\Program Files\Factorio\bin\x64\factorio.exe"
0.003 Read data path: C:/Program Files/Factorio/data
0.003 Write data path: C:/Users/<private>/AppData/Roaming/Factorio [48941/229433MB]
0.003 Binaries path: C:/Program Files/Factorio/bin
0.031 System info: [CPU: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz, 4 cores, RAM: 4324/8142 MB, page: 6213/9998 MB, virtual: 4248/134217727 MB, extended virtual: 0 MB]
0.032 Display options: [FullScreen: 1] [VSync: 0] [UIScale: automatic (100.0%)] [Native DPI: 1] [Screen: 255] [Special: 0000] [Lang: en]
0.048 Available displays: 1
0.049 [0]: \\.\DISPLAY1 - AMD Radeon HD 7900 Series {0x80005, [0,0], 2560x1440, 32bit, 60Hz}
0.104 [Direct3D11] Display: 0, Output: 0, DisplayAdapter: 0, RenderingAdapter: 0; d3dcompiler_47.dll
0.174 Initialised Direct3D[0]: AMD Radeon HD 7900 Series; id: 1002-679a; driver: aticfx64.dll 25.20.15031.9002
0.174 D3D Feature Level: 11.1, DXGI 1.5+, SwapChain: 3,flip-discard,-,-,-,none
0.175 [Local Video Memory] Budget: 2594MB, CurrentUsage: 0MB, Reservation: 0/1373MB
0.175 [Non-Local Vid.Mem.] Budget: 3664MB, CurrentUsage: 0MB, Reservation: 0/1933MB
0.175 Tiled resources: Tier 1
0.175 Unified Memory Architecture: No
0.175 BGR 565 Supported: Yes
0.175 MaximumFrameLatency: 3, GPUThreadPriority: 0
0.232 Desktop composition is active.
0.232 Graphics settings preset: very-high
0.232 Dedicated video memory size 3052 MB
0.232 Graphics options: [Graphics quality: high] [Video memory usage: all] [Light scale: 25%] [DXT: high-quality]
0.232 [Max load threads: 32] [Max texture size: 0] [Tex.Stream.: 0] [Rotation quality: normal] [Color: 32bit]
0.269 DSound: Starting _dsound_update thread
0.269 DSound: Enter _dsound_update; tid=12204
0.612 Loading mod core 0.0.0 (data.lua)
0.799 Loading mod base 0.17.54 (data.lua)
1.496 Loading mod base 0.17.54 (data-updates.lua)
1.642 Checksum for core: 2486543994
1.642 Checksum of base: 2542100768
2.000 Loading sounds...
4.443 Info PlayerData.cpp:67: Local player-data.json available, timestamp 1562621294
4.443 Info PlayerData.cpp:74: Cloud player-data.json unavailable
4.606 Initial atlas bitmap size is 16384
4.654 Created atlas bitmap 16384x16376 [none]
4.658 Created atlas bitmap 16384x11084 [none]
4.659 Created atlas bitmap 8192x3884 [decal]
4.661 Created atlas bitmap 16384x4320 [low-object, linear-minification]
4.662 Created atlas bitmap 8192x3664 [mipmap, linear-minification, linear-magnification, linear-mip-level]
4.663 Created atlas bitmap 16384x6880 [terrain, mipmap, linear-minification, linear-mip-level]
4.663 Created atlas bitmap 4096x1600 [smoke, mipmap, linear-minification, linear-magnification]
4.664 Created atlas bitmap 4096x1704 [icon, not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level]
4.664 Created atlas bitmap 2048x192 [icon-background, not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level, ]
4.664 Created atlas bitmap 8192x1496 [alpha-mask]
4.668 Created atlas bitmap 16384x12632 [shadow, linear-magnification, alpha-mask]
4.668 Created atlas bitmap 8192x2352 [shadow, mipmap, linear-magnification, alpha-mask]
4.678 Texture processor created (2048). GPU accelerated compression Supported: yes, Enabled: yes/yes. Test passed. YCoCgDXT PSNR: 35.83, BC3 PSNR: 33.82
12.283 Parallel Sprite Loader initialized (threads: 3)
23.866 Sprites loaded
23.880 Generated mipmaps (4) for atlas [3] of size 16384x4320
23.891 Generated mipmaps (3) for atlas [4] of size 8192x3664
23.902 Generated mipmaps (3) for atlas [5] of size 16384x6880
23.913 Generated mipmaps (3) for atlas [6] of size 4096x1600
23.924 Generated mipmaps (4) for atlas [7] of size 4096x1704
23.936 Generated mipmaps (3) for atlas [11] of size 8192x2352
23.936 Custom mipmaps uploaded.
23.953 Custom inputs active: 0
24.035 Factorio initialised
24.039 Info HttpSharedState.cpp:54: Downloading https://updater.factorio.com/updater/ge ... iVersion=2
24.765 1 packages available to download (experimental updates enabled).
26.610 Info HttpSharedState.cpp:54: Downloading https://updater.factorio.com/updater/ge ... iVersion=2
48.059 Quitting: user-quit.
48.135 DSound: Stopping voice
48.135 DSound: Joining thread
48.141 DSound: Exit _dsound_update; tid=12204
48.141 DSound: Waiting for voice to stop ... signaled
48.141 DSound: Joined thread
48.141 DSound: Destroying thread
48.141 DSound: Thread destroyed
48.141 DSound: Releasing buffer
48.141 DSound: Voice stopped
48.141 DSound: Deallocating voice
48.141 DSound: Deallocated voice
48.388 Goodbye
0.000 2019-07-09 22:51:01; Factorio 0.17.54 (build 46015, win64, alpha)
0.000 Operating system: Windows 10 (version 1803)
0.000 Not rotating logs.
0.000 Info Updater.cpp:708: Starting updater
0.000 Info Updater.cpp:267: Applying update C:\Users\<private>\AppData\Roaming\Factorio\temp\core-win64-0.17.54-0.17.55-update.zip
3.384 Info Updater.cpp:718: Starting updated game
3.384 Error CrashHandler.cpp:592: Received SIGSEGV
Factorio crashed. Generating symbolized stacktrace, please wait ...
c:\cygwin64\tmp\factorio-build-xhfnfr\libraries\stackwalker\stackwalker.cpp (924): StackWalker::ShowCallstack
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\logger.cpp (537): Logger::writeStacktrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\logger.cpp (544): Logger::logStacktrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\crashhandler.cpp (181): CrashHandler::writeStackTrace
c:\cygwin64\tmp\factorio-build-xhfnfr\src\util\crashhandler.cpp (601): CrashHandler::SignalHandler
minkernel\crts\ucrt\src\appcrt\misc\exception_filter.cpp (219): _seh_filter_exe
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl (304): `__scrt_common_main_seh'::`1'::filt$0
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FF7A84743A8)
00007FF7A84743A8 (Factorio): (filename not available): __C_specific_handler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0B01F7DD)
00007FFE0B01F7DD (ntdll): (filename not available): _chkstk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0AF8D856)
00007FFE0AF8D856 (ntdll): (filename not available): RtlWalkFrameChain
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0B01E70E)
00007FFE0B01E70E (ntdll): (filename not available): KiUserExceptionDispatcher
c:\cygwin64\tmp\factorio-build-xhfnfr\src\globalcontext.cpp (839): GlobalContext::clearResources
c:\cygwin64\tmp\factorio-build-xhfnfr\src\globalcontext.cpp (845): GlobalContext::~GlobalContext
c:\cygwin64\tmp\factorio-build-xhfnfr\src\updater.cpp (727): Updater::autoUpdateStage2
c:\cygwin64\tmp\factorio-build-xhfnfr\src\main.cpp (1151): wmain
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl (288): __scrt_common_main_seh
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE084C4034)
00007FFE084C4034 (KERNEL32): (filename not available): BaseThreadInitThunk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00007FFE0AFF3691)
00007FFE0AFF3691 (ntdll): (filename not available): RtlUserThreadStart
Stack trace logging done
5.851 C:\Users\<private>\AppData\Roaming\Factorio\temp\Factorio.exe
5.851 C:\WINDOWS\SYSTEM32\ntdll.dll
5.851 C:\WINDOWS\System32\KERNEL32.DLL
5.851 C:\WINDOWS\System32\KERNELBASE.dll
5.851 C:\WINDOWS\SYSTEM32\apphelp.dll
5.851 C:\WINDOWS\System32\WLDAP32.dll
5.851 C:\WINDOWS\System32\ucrtbase.dll
5.851 C:\WINDOWS\System32\GDI32.dll
5.851 C:\WINDOWS\System32\gdi32full.dll
5.851 C:\WINDOWS\System32\msvcp_win.dll
5.851 C:\WINDOWS\System32\USER32.dll
5.851 C:\WINDOWS\System32\win32u.dll
5.851 C:\WINDOWS\System32\ole32.dll
5.851 C:\WINDOWS\System32\combase.dll
5.851 C:\WINDOWS\System32\RPCRT4.dll
5.851 C:\WINDOWS\System32\bcryptPrimitives.dll
5.851 C:\WINDOWS\System32\sechost.dll
5.851 C:\WINDOWS\System32\PSAPI.DLL
5.851 C:\WINDOWS\System32\SHELL32.dll
5.851 C:\WINDOWS\System32\msvcrt.dll
5.851 C:\WINDOWS\SYSTEM32\WINMM.dll
5.851 C:\WINDOWS\WinSxS\amd64_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.17134.829_none_2c31982c8af433a3\gdiplus.dll
5.851 C:\WINDOWS\System32\cfgmgr32.dll
5.851 C:\WINDOWS\System32\shcore.dll
5.851 C:\WINDOWS\System32\windows.storage.dll
5.851 C:\WINDOWS\System32\advapi32.dll
5.851 C:\WINDOWS\SYSTEM32\winmmbase.dll
5.851 C:\WINDOWS\System32\shlwapi.dll
5.851 C:\WINDOWS\System32\kernel.appcore.dll
5.851 C:\WINDOWS\System32\profapi.dll
5.851 C:\WINDOWS\System32\powrprof.dll
5.851 C:\WINDOWS\System32\FLTLIB.DLL
5.851 C:\WINDOWS\System32\IMM32.dll
5.851 C:\WINDOWS\System32\OLEAUT32.dll
5.851 C:\WINDOWS\System32\WS2_32.dll
5.851 C:\WINDOWS\System32\CRYPT32.dll
5.851 C:\WINDOWS\System32\MSASN1.dll
5.851 C:\WINDOWS\System32\WINTRUST.dll
5.852 C:\WINDOWS\System32\imagehlp.dll
5.852 C:\WINDOWS\SYSTEM32\IPHLPAPI.DLL
5.852 C:\WINDOWS\SYSTEM32\DSOUND.dll
5.852 C:\WINDOWS\SYSTEM32\VERSION.dll
5.852 C:\WINDOWS\SYSTEM32\SspiCli.dll
5.852 Error Util.cpp:97: Unexpected error occurred. If you're running the latest version of the game you can help us solve the problem by posting the contents of the log file on the Factorio forums.
Please also include the save file(s), any mods you may be using, and any steps you know of to reproduce the crash.