The game also crashes, when I try to place ammunition into the car's slot, while I'm in the car.
Update: Strangely I have not been able to replicate the error today

Possibly of interest: I was not once attacked in the game so far. Enemy bases are far.
Savegame:
http://we.tl/s8bCTdvO9r (file will be deleted 2015-05-06)
Logfile:
Code: Select all
0.000 2015-04-29 12:44:17; Factorio 0.11.21 (Build 13994, mac)
0.000 Operating system: Mac OS X 10.10.3
0.000 Read data path: /Applications/factorio.app/Contents/data
0.000 Write data path: /Users/Tobias/Library/Application Support/factorio
0.000 Binaries path: /
0.184 Graphics options: [FullScreen: false] [VSync: true] [UIScale: 100%] [MultiSampling: OFF] [Graphics quality: normal] [Video memory usage: all]
0.242 Loading mod core 0.0.0 (data.lua)
0.271 Loading mod base 0.11.21 (data.lua)
0.648 Loading mod base 0.11.21 (data-updates.lua)
1.460 Initial atlas bitmap size is 8192
1.473 Created atlas bitmap 8192x8187
1.474 Created atlas bitmap 8192x4945
14.777 Info Updater.cpp:717: Downloading https://www.factorio.com/updater/get-available-versions?username=tobsimon&token=<private>&apiVersion=2
16.007 0 packages available to download (experimental updates disabled).
16.054 Factorio initialised
24.982 Loading map /Users/Tobias/Library/Application Support/factorio/saves/neuland_exkursion.zip
25.035 Info Scenario.cpp:158: Map version 0.11.21-1
Factorio crashed. Generating symbolized stacktrace, please wait ...
#2 0x100367957 in CrashHandler::SignalHandler(int) (in factorio) + 39
#3 0x7fff8c705f1a in 0x7fff8c705f1a
#4 0x1007c47e8 in boost::re_detail::put_mem_block(void*) (in factorio) + 88
#5 0x1002420e5 in ToolEquipGui::update() (in factorio) + 613
#6 0x10017ae45 in Game::prepareRender() (in factorio) + 453
#7 0x10028461c in MainLoop::prepare() (in factorio) + 876
#8 0x100286157 in MainLoop::tickStep(Thread&, ThreadBarrier&, boost::chrono::time_point<boost::chrono::system_clock, boost::chrono::duration<long long, boost::ratio<1l, 1000000000l> > >&, boost::chrono::time_point<boost::chrono::system_clock, boost::chrono::duration<long long, boost::ratio<1l, 1000000000l> > >&) (in factorio) + 199
#9 0x1002823a3 in MainLoop::run(boost::filesystem::path const&, boost::filesystem::path const&, bool) (in factorio) + 883
#10 0x100281423 in _al_mangled_main (in factorio) + 7475
#11 0x1006bfbb7 in +[AllegroAppDelegate app_main:] (in factorio) + 23
#12 0x7fff8ec01dc2 in 0x7fff8ec01dc2
#13 0x7fff955ac268 in 0x7fff955ac268
#14 0x7fff955ac1e5 in 0x7fff955ac1e5
#15 0x7fff955aa41d in 0x7fff955aa41d
173.905 Error Util.cpp:43: Unexpected error occurred. You can help us to solve the problem by posting the contents of the log file on the Factorio forums.