Sorry for bothering you.I will post a report to the dev team later.
Log
0.001 2015-07-19 12:57:32; Factorio 0.12.0 (Build 103, win64)
0.001 Operating system: Windows 7 Service Pack 1
0.001 Read data path: D:/Program Files/Factorio/data
0.002 Write data path: C:/Users/Robert/AppData/Roaming/Factorio
0.002 Binaries path: D:/Program Files/Factorio/bin
0.105 Initialised Direct3D: ATI Radeon HD 4600 Series; driver: aticfx64.dll 8.17.10.1129
0.139 Graphics options: [FullScreen: false] [VSync: true] [UIScale: 100%] [MultiSampling: OFF] [Graphics quality: normal] [Video memory usage: all]
0.263 Loading mod core 0.0.0 (data.lua)
0.266 Loading mod base 0.12.0 (data.lua)
0.368 Loading mod CompactPower 0.1.0 (data.lua)
0.425 Loading mod Electric Furnaces 1.0.0 (data.lua)
0.490 Loading mod Treefarm-Lite 0.2.0 (data.lua)
0.556 Loading mod Yuoki 0.2.31 (data.lua)
1.182 Loading mod alien-science 0.0.6 (data.lua)
1.249 Loading mod Treefarm-AC 0.2.0 (data.lua)
2.321 Initial atlas bitmap size is 8192
2.333 Created atlas bitmap 8192x8188
2.344 Created atlas bitmap 8192x8187
2.345 Created atlas bitmap 8192x888
29.599 Factorio initialised
42.126 Loading map C:/Users\Robert\AppData\Roaming\Factorio\saves\51.zip
42.161 Info Scenario.cpp:160: Map version 0.11.21-1
42.168 Info PrototypeMigrationList.cpp:94: Activating migration base/2015-06-01_Factorio_0.12.0.json
Factorio crashed. Generating symbolized stacktrace, please wait ...
c:\temp\factorio-5829127a\libraries\stackwalker\stackwalker.cpp (923): StackWalker::ShowCallstack
c:\temp\factorio-5829127a\src\util\logger.cpp (283): Logger::writeStacktrace
c:\temp\factorio-5829127a\src\util\logger.cpp (337): Logger::logStacktrace
c:\temp\factorio-5829127a\src\util\crashhandler.cpp (79): CrashHandler::writeStackTrace
c:\temp\factorio-5829127a\src\util\crashhandler.cpp (88): CrashHandler::SehHandler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 000000007759B940)
000000007759B940 (kernel32): (filename not available): UnhandledExceptionFilter
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 0000000077813398)
0000000077813398 (ntdll): (filename not available): MD5Final
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777985C8)
00000000777985C8 (ntdll): (filename not available): _C_specific_handler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777A9D2D)
00000000777A9D2D (ntdll): (filename not available): RtlDecodePointer
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777991CF)
00000000777991CF (ntdll): (filename not available): RtlUnwindEx
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777D1248)
00000000777D1248 (ntdll): (filename not available): KiUserExceptionDispatcher
c:\temp\factorio-5829127a\src\logistics\triangulation.cpp (74): Triangulation::voronoiTriangulation
c:\temp\factorio-5829127a\src\logistics\triangulation.cpp (57): Triangulation::updateTriangulation
c:\temp\factorio-5829127a\src\logistics\logistictopologyupdatehelper.cpp (73): LogisticTopologyUpdateHelper::deleteCell
c:\temp\factorio-5829127a\src\logistics\logisticmanager.cpp (167): LogisticManager::removeLogisticCell
c:\temp\factorio-5829127a\src\entity\roboport.cpp (220): Roboport::deactivate
c:\temp\factorio-5829127a\src\entity\roboport.cpp (226): Roboport::onDestroy
c:\temp\factorio-5829127a\src\entity\entity.cpp (188): Entity::forceDestroy
c:\temp\factorio-5829127a\src\map\map.cpp (549): Map::removeDummyEntities
c:\temp\factorio-5829127a\src\map\map.cpp (615): Map::setupEntities
c:\temp\factorio-5829127a\src\scenario\scenario.cpp (221): Scenario::loadFactory
c:\temp\factorio-5829127a\src\scenario\parallelscenarioloader.cpp (66): ParallelScenarioLoader::doLoad
c:\boost_1_58_0\boost\thread\detail\thread.hpp (117): boost::detail::thread_data<boost::_bi::bind_t<void,void (__cdecl*)(ParallelScenarioLoader * __ptr64,MapDeserialiser * __ptr64,enum InputType,InputHandler * __ptr64,MultiplayerManager * __ptr64,bool),boost::_bi::list6<boost::_bi::value<ParallelScenarioLoader * __ptr64>,boost::_bi::value<MapDeserialiser * __ptr64>,boost::_bi::value<enum InputType>,boost::_bi::value<InputHandler * __ptr64>,boost::_bi::value<MultiplayerManager * __ptr64>,boost::_bi::value<bool> > > >::run
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 000000013F81B163)
000000013F81B163 (Factorio): (filename not available): boost::`anonymous namespace'::thread_start_function
f:\dd\vctools\crt\crtw32\startup\threadex.c (376): _callthreadstartex
f:\dd\vctools\crt\crtw32\startup\threadex.c (354): _threadstartex
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000775159ED)
00000000775159ED (kernel32): (filename not available): BaseThreadInitThunk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777AC541)
00000000777AC541 (ntdll): (filename not available): RtlUserThreadStart
44.413 Error Util.cpp:45: Unexpected error occurred. You can help us to solve the problem by posting the contents of the log file on the Factorio forums.
0.001 Operating system: Windows 7 Service Pack 1
0.001 Read data path: D:/Program Files/Factorio/data
0.002 Write data path: C:/Users/Robert/AppData/Roaming/Factorio
0.002 Binaries path: D:/Program Files/Factorio/bin
0.105 Initialised Direct3D: ATI Radeon HD 4600 Series; driver: aticfx64.dll 8.17.10.1129
0.139 Graphics options: [FullScreen: false] [VSync: true] [UIScale: 100%] [MultiSampling: OFF] [Graphics quality: normal] [Video memory usage: all]
0.263 Loading mod core 0.0.0 (data.lua)
0.266 Loading mod base 0.12.0 (data.lua)
0.368 Loading mod CompactPower 0.1.0 (data.lua)
0.425 Loading mod Electric Furnaces 1.0.0 (data.lua)
0.490 Loading mod Treefarm-Lite 0.2.0 (data.lua)
0.556 Loading mod Yuoki 0.2.31 (data.lua)
1.182 Loading mod alien-science 0.0.6 (data.lua)
1.249 Loading mod Treefarm-AC 0.2.0 (data.lua)
2.321 Initial atlas bitmap size is 8192
2.333 Created atlas bitmap 8192x8188
2.344 Created atlas bitmap 8192x8187
2.345 Created atlas bitmap 8192x888
29.599 Factorio initialised
42.126 Loading map C:/Users\Robert\AppData\Roaming\Factorio\saves\51.zip
42.161 Info Scenario.cpp:160: Map version 0.11.21-1
42.168 Info PrototypeMigrationList.cpp:94: Activating migration base/2015-06-01_Factorio_0.12.0.json
Factorio crashed. Generating symbolized stacktrace, please wait ...
c:\temp\factorio-5829127a\libraries\stackwalker\stackwalker.cpp (923): StackWalker::ShowCallstack
c:\temp\factorio-5829127a\src\util\logger.cpp (283): Logger::writeStacktrace
c:\temp\factorio-5829127a\src\util\logger.cpp (337): Logger::logStacktrace
c:\temp\factorio-5829127a\src\util\crashhandler.cpp (79): CrashHandler::writeStackTrace
c:\temp\factorio-5829127a\src\util\crashhandler.cpp (88): CrashHandler::SehHandler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 000000007759B940)
000000007759B940 (kernel32): (filename not available): UnhandledExceptionFilter
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 0000000077813398)
0000000077813398 (ntdll): (filename not available): MD5Final
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777985C8)
00000000777985C8 (ntdll): (filename not available): _C_specific_handler
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777A9D2D)
00000000777A9D2D (ntdll): (filename not available): RtlDecodePointer
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777991CF)
00000000777991CF (ntdll): (filename not available): RtlUnwindEx
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777D1248)
00000000777D1248 (ntdll): (filename not available): KiUserExceptionDispatcher
c:\temp\factorio-5829127a\src\logistics\triangulation.cpp (74): Triangulation::voronoiTriangulation
c:\temp\factorio-5829127a\src\logistics\triangulation.cpp (57): Triangulation::updateTriangulation
c:\temp\factorio-5829127a\src\logistics\logistictopologyupdatehelper.cpp (73): LogisticTopologyUpdateHelper::deleteCell
c:\temp\factorio-5829127a\src\logistics\logisticmanager.cpp (167): LogisticManager::removeLogisticCell
c:\temp\factorio-5829127a\src\entity\roboport.cpp (220): Roboport::deactivate
c:\temp\factorio-5829127a\src\entity\roboport.cpp (226): Roboport::onDestroy
c:\temp\factorio-5829127a\src\entity\entity.cpp (188): Entity::forceDestroy
c:\temp\factorio-5829127a\src\map\map.cpp (549): Map::removeDummyEntities
c:\temp\factorio-5829127a\src\map\map.cpp (615): Map::setupEntities
c:\temp\factorio-5829127a\src\scenario\scenario.cpp (221): Scenario::loadFactory
c:\temp\factorio-5829127a\src\scenario\parallelscenarioloader.cpp (66): ParallelScenarioLoader::doLoad
c:\boost_1_58_0\boost\thread\detail\thread.hpp (117): boost::detail::thread_data<boost::_bi::bind_t<void,void (__cdecl*)(ParallelScenarioLoader * __ptr64,MapDeserialiser * __ptr64,enum InputType,InputHandler * __ptr64,MultiplayerManager * __ptr64,bool),boost::_bi::list6<boost::_bi::value<ParallelScenarioLoader * __ptr64>,boost::_bi::value<MapDeserialiser * __ptr64>,boost::_bi::value<enum InputType>,boost::_bi::value<InputHandler * __ptr64>,boost::_bi::value<MultiplayerManager * __ptr64>,boost::_bi::value<bool> > > >::run
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 000000013F81B163)
000000013F81B163 (Factorio): (filename not available): boost::`anonymous namespace'::thread_start_function
f:\dd\vctools\crt\crtw32\startup\threadex.c (376): _callthreadstartex
f:\dd\vctools\crt\crtw32\startup\threadex.c (354): _threadstartex
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000775159ED)
00000000775159ED (kernel32): (filename not available): BaseThreadInitThunk
ERROR: SymGetLineFromAddr64, GetLastError: 487 (Address: 00000000777AC541)
00000000777AC541 (ntdll): (filename not available): RtlUserThreadStart
44.413 Error Util.cpp:45: Unexpected error occurred. You can help us to solve the problem by posting the contents of the log file on the Factorio forums.