0.001 2019-03-23 17:45:17; Factorio 0.17.17 (build 43958, mac, steam)
   0.001 Operating system: macOS 10.14.3
   0.001 Program arguments: "/Users/shawn/SteamLibrary/steamapps/common/Factorio/factorio.app/Contents/MacOS/factorio" 
   0.001 Read data path: /Users/shawn/SteamLibrary/steamapps/common/Factorio/factorio.app/Contents/data
   0.001 Write data path: /Users/shawn/Library/Application Support/factorio [6845/190734MB]
   0.001 Binaries path: /Users/shawn/SteamLibrary/steamapps/common/Factorio/factorio.app/Contents
   0.055 System info: [CPU:       Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz, 8 cores, RAM: 8192 MB]
   0.055 Display options: [FullScreen: 1] [VSync: 1] [UIScale: automatic (100.0%)] [Native DPI: 1] [Screen: 255] [Special: 00] [Lang: en]
   1.243 Available displays: 1
   1.243  [0]: Color LCD - {[0,0], 1440x900, SDL_PIXELFORMAT_ARGB8888, 60Hz}
   2.145 Initialised OpenGL:[0] NVIDIA GeForce GT 650M OpenGL Engine; driver: 4.1 NVIDIA-12.0.21 355.11.10.50.10.103
   2.145   [Extensions] s3tc:yes; KHR_debug:NO; ARB_clear_texture:NO, ARB_copy_image:NO
   2.145   [Version] 4.1
   2.311   Dedicated video memory size 1024 MB (detected from GeForce GT 650M; VendorID: 0x1022700)
   2.311 Graphics options: [Graphics quality: normal] [Video memory usage: all] [Light scale: 100%] [DXT: low-quality]
   2.311                   [Max load threads: 32] [Max texture size: 0] [Tex.Stream.: 0] [Rotation quality: low] [Color: 32bit]
   2.504 Loading mod core 0.0.0 (data.lua)
   2.613 Loading mod base 0.17.17 (data.lua)
   3.010 Loading mod base 0.17.17 (data-updates.lua)
   3.177 Checksum for core: 2126933501
   3.177 Checksum of base: 1967292039
   3.890 Loading sounds...
   4.204 Info PlayerData.cpp:69: Local player-data.json unavailable
   4.204 Info PlayerData.cpp:72: Cloud player-data.json available, timestamp 1553221882
   4.350 Initial atlas bitmap size is 16384
   4.353 Created atlas bitmap 16384x7644 [none]
   4.353 Created atlas bitmap 16384x688 [decal]
   4.353 Created atlas bitmap 16384x1104 [low-object]
   4.353 Created atlas bitmap 16384x656 [mipmap, linear-minification, linear-magnification, linear-mip-level]
   4.354 Created atlas bitmap 16384x2208 [terrain, mipmap, linear-minification, linear-mip-level, no-crop]
   4.354 Created atlas bitmap 16384x480 [smoke, mipmap, linear-minification, linear-magnification]
   4.354 Created atlas bitmap 16384x456 [not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level, no-crop, no-scale]
   4.354 Created atlas bitmap 16384x216 [alpha-mask]
   4.355 Created atlas bitmap 16384x3184 [shadow, linear-magnification, alpha-mask]
   4.355 Created atlas bitmap 16384x384 [shadow, mipmap, linear-magnification, alpha-mask]
   4.409 Texture processor created. GPU accelerated compression Supported: yes, Enabled: yes/yes. Test passed. YCoCgDXT PSNR: 35.83, BC3 PSNR: 33.82
   6.129 Parallel Sprite Loader initialized (threads: 5)
  53.452 Sprites loaded
  73.479 Generated mipmaps for atlas of size 16384x1104
Factorio crashed. Generating symbolized stacktrace, please wait ...
#1  0x000000010762f5c2 in Logger::logStacktrace(StackTraceInfo*) + 0x12
#2  0x0000000107618381 in CrashHandler::writeStackTrace(CrashHandler::CrashReason) + 0x61
#3  0x0000000107619054 in CrashHandler::commonSignalHandler(int) + 0x74
#4  0x00000001076182a9 in CrashHandler::SignalHandler(int) + 0x9
#5  0x00007fff6076ab3d in _sigtramp + 0x1d
Stack trace logging done
  74.489 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.