Hi!
I builded my lights on a map, then i pressed the play button and then the editor crashed. Now i can’t load that that specific map (i can load another maps). At 26% the editor crashes.
I can get into the project, but i can’t load that map… what can i do?
I tried to verify, delete the saved/ intermediate folder, move the project… 
Here is the log file:
Log file open, 08/02/16 03:00:26
LogInitisplay: Running engine for game: Jam
LogPlatformFile: Not using cached read wrapper
LogInitisplay: RandInit(-1941278427) SRandInit(-1941278426).
LogTaskGraph: Started task graph with 4 named threads and 7 total threads with 1 sets of task threads.
LogStats: Stats thread started at 0.066047
LogInit: Version: 4.12.5-3039270+++UE4+Release-4.12
LogInit: API Version: 2992821
LogInit: Net Version: 3039270
LogDevObjectVersion: Number of dev versions registered: 13
LogDevObjectVersion: Dev-Blueprints (B0D832E4-1F89-4F0D-ACCF-7EB736FD4AA2): 3
LogDevObjectVersion: Dev-Build (E1C64328-A22C-4D53-A36C-8E866417BD8C): 0
LogDevObjectVersion: Dev-Core (375EC13C-06E4-48FB-B500-84F0262A717E): 1
LogDevObjectVersion: Dev-Editor (E4B068ED-F494-42E9-A231-DA0B2E46BB41): 2
LogDevObjectVersion: Dev-Framework (CFFC743F-43B0-4480-9391-14DF171D2073): 6
LogDevObjectVersion: Dev-Mobile (B02B49B5-BB20-44E9-A304-32B752E40360): 0
LogDevObjectVersion: Dev-Networking (A4E4105C-59A1-49B5-A7C5-40C4547EDFEE): 0
LogDevObjectVersion: Dev-Online (39C831C9-5AE6-47DC-9A44-9C173E1C8E7C): 0
LogDevObjectVersion: Dev-Physics (78F01B33-EBEA-4F98-B9B4-84EACCB95AA2): 0
LogDevObjectVersion: Dev-Platform (6631380F-2D4D-43E0-8009-CF276956A95A): 0
LogDevObjectVersion: Dev-Rendering (12F88B9F-8875-4AFC-A67C-D90C383ABD29): 2
LogDevObjectVersion: Dev-Sequencer (7B5AE74C-D270-4C10-A958-57980B212A5A): 0
LogDevObjectVersion: Dev-VR (D7296918-1DD6-4BDD-9DE2-64A83CC13884): 0
LogInit: Compiled (64-bit): Jul 6 2016 09:09:46
LogInit: Compiled with Visual C++: 19.00.23026.00
LogInit: Build Configuration: Development
LogInit: Branch Name: ++UE4+Release-4.12
LogInit: Command line:
LogInit: Base directory: C:/Program Files (x86)/Epic Games/4.12/Engine/Binaries/Win64/
LogInit: Installed Engine Build: 1
LogInit: Using libcurl 7.41.0
LogInit: - built for x86_64-pc-win32
LogInit: - supports SSL with WinSSL
LogInit: - other features:
LogInit: CURL_VERSION_SSL
LogInit: CURL_VERSION_IPV6
LogInit: CURL_VERSION_ASYNCHDNS
LogInit: CURL_VERSION_LARGEFILE
LogInit: CURL_VERSION_IDN
LogInit: CurlRequestOptions (configurable via config and command line):
LogInit: - bVerifyPeer = true - Libcurl will verify peer certificate
LogInit: - bUseHttpProxy = false - Libcurl will NOT use HTTP proxy
LogInit: - bDontReuseConnections = false - Libcurl will reuse connections
LogInit: - CertBundlePath = nullptr - Libcurl will use whatever was configured at build time.
LogInit: Presizing for max 8388607 objects, including 0 objects not considered by GC, pre-allocating 0 bytes for permanent pool.
LogInit: Object subsystem initialized
[2016.08.02-01.00.26:810][ 0]LogInit: Selected Device Profile: [Windows]
[2016.08.02-01.00.26:810][ 0]LogInit: Applying CVar settings loaded from the selected device profile: [Windows]
[2016.08.02-01.00.26:818][ 0]LogInit: Computer: DESKTOP-3H6718O
[2016.08.02-01.00.26:818][ 0]LogInit: User: Panda
[2016.08.02-01.00.26:818][ 0]LogInit: CPU Page size=65536, Cores=4
[2016.08.02-01.00.26:818][ 0]LogInit: High frequency timer resolution =3.423909 MHz
[2016.08.02-01.00.26:818][ 0]LogMemory: Memory total: Physical=7.9GB (8GB approx)
[2016.08.02-01.00.26:818][ 0]LogMemory: Platform Memory Stats for Windows
[2016.08.02-01.00.26:818][ 0]LogMemory: Process Physical Memory: 190.30 MB used, 190.30 MB peak
[2016.08.02-01.00.26:818][ 0]LogMemory: Process Virtual Memory: 194.84 MB used, 194.84 MB peak
[2016.08.02-01.00.26:818][ 0]LogMemory: Physical Memory: 2724.86 MB used, 8133.84 MB total
[2016.08.02-01.00.26:818][ 0]LogMemory: Virtual Memory: 552.89 MB used, 134217728.00 MB total
[2016.08.02-01.00.26:841][ 0]LogTextLocalizationManager: No translations for ('hu-HU') exist, falling back to 'en' for localization and internationalization data.
[2016.08.02-01.00.27:144][ 0]LogD3D11RHI: D3D11 adapters:
[2016.08.02-01.00.27:151][ 0]LogD3D11RHI: 0. 'AMD Radeon HD 7800 Series' (Feature Level 11_0)
[2016.08.02-01.00.27:151][ 0]LogD3D11RHI: 2029/0/4066 MB DedicatedVideo/DedicatedSystem/SharedSystem, Outputs:1, VendorId:0x1002
[2016.08.02-01.00.27:152][ 0]LogD3D11RHI: 1. 'Microsoft Basic Render Driver' (Feature Level 11_0)
[2016.08.02-01.00.27:152][ 0]LogD3D11RHI: 0/0/4066 MB DedicatedVideo/DedicatedSystem/SharedSystem, Outputs:0, VendorId:0x1414
[2016.08.02-01.00.27:152][ 0]LogD3D11RHI: Chosen D3D11 Adapter: 0
[2016.08.02-01.00.27:155][ 0]LogD3D11RHI: Creating new Direct3DDevice
[2016.08.02-01.00.27:155][ 0]LogD3D11RHI: GPU DeviceId: 0x6819 (for the marketing name, search the web for "GPU Device Id")
[2016.08.02-01.00.27:155][ 0]LogWindows: EnumDisplayDevices:
[2016.08.02-01.00.27:155][ 0]LogWindows: 0. 'AMD Radeon HD 7800 Series' (P:1 D:1)
[2016.08.02-01.00.27:155][ 0]LogWindows: 1. 'AMD Radeon HD 7800 Series' (P:0 D:0)
[2016.08.02-01.00.27:155][ 0]LogWindows: 2. 'AMD Radeon HD 7800 Series' (P:0 D:0)
[2016.08.02-01.00.27:155][ 0]LogWindows: 3. 'AMD Radeon HD 7800 Series' (P:0 D:0)
[2016.08.02-01.00.27:155][ 0]LogWindows: 4. 'AMD Radeon HD 7800 Series' (P:0 D:0)
[2016.08.02-01.00.27:155][ 0]LogWindows: 5. 'AMD Radeon HD 7800 Series' (P:0 D:0)
[2016.08.02-01.00.27:155][ 0]LogWindows: DebugString: FoundDriverCount:6
[2016.08.02-01.00.27:155][ 0]LogD3D11RHI: Adapter Name: AMD Radeon HD 7800 Series
[2016.08.02-01.00.27:155][ 0]LogD3D11RHI: Driver Version: Crimson 16.7.3 (internal:16.300.2311.0, unified:16.300.2311.0)
[2016.08.02-01.00.27:155][ 0]LogD3D11RHI: Driver Date: 7-18-2016
[2016.08.02-01.00.27:155][ 0]LogRHI: Texture pool is 1361 MB (70% of 1945 MB)
[2016.08.02-01.00.27:160][ 0]LogD3D11RHI: Async texture creation disabled: no driver support
[2016.08.02-01.00.27:169][ 0]LogD3D11RHI: GPU Timing Frequency: 27.000000 (Debug: 2 1)
[2016.08.02-01.00.27:169][ 0]LogShaderCompilers: Guid format shader working directory is -13 characters bigger than the processId version (../../../../../../Users/Panda/Documents/Unreal Projects/Jam/Intermediate/Shaders/WorkingDirectory/1824/).
[2016.08.02-01.00.27:170][ 0]LogShaderCompilers: Cleaned the shader compiler working directory 'C:/Users/Panda/AppData/Local/Temp/UnrealShaderWorkingDir/1C6CEEC649E2A2A582853AAB29F2CBB7/'.
[2016.08.02-01.00.27:170][ 0]LogShaderCompilersisplay: Using Local Shader Compiler.
[2016.08.02-01.00.27:881][ 0]LogTempisplay: Loaded TP AllDesktopTargetPlatform
[2016.08.02-01.00.27:888][ 0]LogTempisplay: Loaded TP WindowsClientTargetPlatform
[2016.08.02-01.00.27:895][ 0]LogTempisplay: Loaded TP WindowsNoEditorTargetPlatform
[2016.08.02-01.00.27:902][ 0]LogTempisplay: Loaded TP WindowsServerTargetPlatform
[2016.08.02-01.00.27:909][ 0]LogTempisplay: Loaded TP WindowsTargetPlatform
[2016.08.02-01.00.27:915][ 0]LogTempisplay: Loaded TP AndroidTargetPlatform
[2016.08.02-01.00.27:921][ 0]LogTempisplay: Loaded TP Android_ASTCTargetPlatform
[2016.08.02-01.00.27:926][ 0]LogTempisplay: Loaded TP Android_ATCTargetPlatform
[2016.08.02-01.00.27:932][ 0]LogTempisplay: Loaded TP Android_DXTTargetPlatform
[2016.08.02-01.00.27:938][ 0]LogTempisplay: Loaded TP Android_ETC1TargetPlatform
[2016.08.02-01.00.27:943][ 0]LogTempisplay: Loaded TP Android_ETC2TargetPlatform
[2016.08.02-01.00.27:956][ 0]LogTempisplay: Loaded TP Android_MultiTargetPlatform
[2016.08.02-01.00.27:956][ 0]LogTempisplay: Loaded TP Android_PVRTCTargetPlatform
[2016.08.02-01.00.27:956][ 0]LogTempisplay: Loaded TP HTML5TargetPlatform
[2016.08.02-01.00.27:975][ 0]LogTempisplay: Loaded TP IOSTargetPlatform
[2016.08.02-01.00.27:980][ 0]LogTempisplay: Loaded TP TVOSTargetPlatform
[2016.08.02-01.00.27:986][ 0]LogTempisplay: Loaded TP LinuxNoEditorTargetPlatform
[2016.08.02-01.00.27:992][ 0]LogTempisplay: Loaded TP LinuxServerTargetPlatform
[2016.08.02-01.00.27:998][ 0]LogTempisplay: Loaded TP LinuxTargetPlatform
[2016.08.02-01.00.27:998][ 0]LogTargetPlatformManagerisplay: Building Assets For Windows
[2016.08.02-01.00.28:049][ 0]LogDerivedDataCacheisplay: Max Cache Size: 512 MB
[2016.08.02-01.00.28:087][ 0]LogDerivedDataCache: Loaded boot cache 0.04s 48MB C:/Users/Panda/AppData/Local/UnrealEngine/4.12/DerivedDataCache/Boot.ddc.
[2016.08.02-01.00.28:087][ 0]LogDerivedDataCacheisplay: Loaded Boot cache: C:/Users/Panda/AppData/Local/UnrealEngine/4.12/DerivedDataCache/Boot.ddc
[2016.08.02-01.00.28:088][ 0]LogDerivedDataCache: FDerivedDataBackendGraph: Pak pak cache file ../../../../../../Users/Panda/Documents/Unreal Projects/Jam/DerivedDataCache/DDC.ddp not found, will not use a pak cache.
[2016.08.02-01.00.28:088][ 0]LogDerivedDataCache: Unable to find inner node Pak for hierarchical cache Hierarchy.
[2016.08.02-01.00.28:088][ 0]LogDerivedDataCache: FDerivedDataBackendGraph: CompressedPak pak cache file ../../../../../../Users/Panda/Documents/Unreal Projects/Jam/DerivedDataCache/Compressed.ddp not found, will not use a pak cache.
[2016.08.02-01.00.28:088][ 0]LogDerivedDataCache: Unable to find inner node CompressedPak for hierarchical cache Hierarchy.
[2016.08.02-01.00.28:101][ 0]LogDerivedDataCacheisplay: Pak cache opened for reading ../../../Engine/DerivedDataCache/Compressed.ddp.
[2016.08.02-01.00.28:112][ 0]LogDerivedDataCache: Using Local data cache path C:/Users/Panda/AppData/Local/UnrealEngine/Common/DerivedDataCache: Writable
[2016.08.02-01.00.28:241][ 0]LogInit: Selected Device Profile: [Windows]
[2016.08.02-01.00.28:242][ 0]LogContentStreaming: Texture pool size is 0.00 MB
[2016.08.02-01.00.28:353][ 0]LogMeshUtilities: No automatic mesh reduction module available
[2016.08.02-01.00.28:353][ 0]LogMeshUtilities: No automatic mesh merging module available
[2016.08.02-01.00.28:353][ 0]LogMeshUtilities: No distributed automatic mesh merging module available
[2016.08.02-01.00.28:538][ 0]LogAssetRegistry: FAssetRegistry took 0.0217 seconds to start up
[2016.08.02-01.00.28:549][ 0]LogPackageLocalizationCache: Processed 3 localized package path(s) for 1 prioritized culture(s) in 0.009033 seconds
[2016.08.02-01.00.28:554][ 0]LogUObjectArray: 28739 objects as part of root set at end of initial load.
[2016.08.02-01.00.28:554][ 0]LogUObjectAllocator: 5855632 out of 0 bytes used by permanent object pool.
[2016.08.02-01.00.28:554][ 0]LogUObjectArray: CloseDisregardForGC: 0/0 objects in disregard for GC pool
[2016.08.02-01.00.28:559][ 0]LogInit: WinSock: version 1.1 (2.2), MaxSocks=32767, MaxUdp=65467
[2016.08.02-01.00.28:675][ 0]LogSlate: SlateFontCache - WITH_FREETYPE: 1, WITH_HARFBUZZ: 1
[2016.08.02-01.00.28:675][ 0]LogSlate: SlateFontCache - WITH_FREETYPE: 1, WITH_HARFBUZZ: 1
[2016.08.02-01.00.29:144][ 0]LogSubstanceCoreModule: Substance CPU Engine Loaded, Max Texture Size 2048
[2016.08.02-01.00.29:151][ 0]LogUdpMessaging: Initializing bridge on interface 0.0.0.0:0 to multicast group 230.0.0.1:6666.
[2016.08.02-01.00.29:315][ 0]SourceControl: Info Source control is disabled
[2016.08.02-01.00.29:316][ 0]SourceControl: Info Source control is disabled
[2016.08.02-01.00.29:322][ 0]SourceControl: Info Source control is disabled
[2016.08.02-01.00.29:327][ 0]SourceControl: Info Source control is disabled
[2016.08.02-01.00.29:481][ 0]LogEngine: Initializing Engine...
[2016.08.02-01.00.29:482][ 0]LogHMD: SteamVR failed to initialize. Err: 110
[2016.08.02-01.00.29:482][ 0]LogHMD: SteamVR failed to initialize. Err: 110
[2016.08.02-01.00.29:581][ 0]LogAIModule: Creating AISystem for world NewWorld
[2016.08.02-01.00.29:585][ 0]LogInit: XAudio2 using 'Speakers (High Definition Audio Device)' : 2 channels at 44.1 kHz using 16 bits per sample (channel mask 0x3)
[2016.08.02-01.00.29:593][ 0]LogInit: FAudioDevice initialized.
[2016.08.02-01.00.29:613][ 0]LogDerivedDataCache: Saved boot cache 0.02s 48MB C:/Users/Panda/AppData/Local/UnrealEngine/4.12/DerivedDataCache/Boot.ddc.
[2016.08.02-01.00.29:618][ 0]LogInit: Texture streaming: Enabled
[2016.08.02-01.00.29:633][ 0]LogInit: Transaction tracking system initialized
[2016.08.02-01.00.29:648][ 0]BlueprintLog: New page: Editor Load
[2016.08.02-01.00.29:696][ 0]LocalizationService: Info Localization service is disabled
[2016.08.02-01.00.29:742][ 0]LogConsoleResponseisplay:
[2016.08.02-01.00.29:812][ 0]LogCookisplay: Max memory allowance for cook 8192mb
[2016.08.02-01.00.29:812][ 0]LogCookisplay: Mobile HDR setting 1
[2016.08.02-01.00.29:881][ 0]LogFileCache: Scanning file cache for directory 'C:/Users/Panda/Documents/Unreal Projects/Jam/Content/' took 0.04s
[2016.08.02-01.00.29:881][ 0]SourceControl: Info Source control is disabled
[2016.08.02-01.00.29:881][ 0]Cmd: MAP LOAD FILE="../../../../../../Users/Panda/Documents/Unreal Projects/Jam/Content/FirstPersonBP/Maps/FirstPersonExampleMap.umap" TEMPLATE=0 SHOWPROGRESS=1 FEATURELEVEL=3
[2016.08.02-01.00.29:881][ 0]LightingResults: New page: Lighting Build
[2016.08.02-01.00.29:883][ 0]MapCheck: New page: Map Check
[2016.08.02-01.00.29:883][ 0]LightingResults: New page: Lighting Build
[2016.08.02-01.00.30:237][ 0]LogAIModule: Creating AISystem for world FirstPersonExampleMap
[2016.08.02-01.00.30:243][ 0]LogEditorServer: Finished looking for orphan Actors (0.000 secs)
[2016.08.02-01.00.30:244][ 0]Cmd: MAP CHECKDEP NOCLEARLOG
[2016.08.02-01.00.30:279][ 0]MapCheck: Info Map check complete: 0 Error(s), 0 Warning(s), took 35.107ms to complete.
[2016.08.02-01.00.30:279][ 0]LogFileHelpers: Loading map 'FirstPersonExampleMap' took 0.398
[2016.08.02-01.00.30:392][ 0]LogCollectionManager: Loaded 0 collections in 0.001409 seconds
[2016.08.02-01.00.30:430][ 0]LogFileCache: Scanning file cache for directory 'C:/Users/Panda/Documents/Unreal Projects/Jam/Saved/Collections/' took 0.01s
[2016.08.02-01.00.30:430][ 0]LogFileCache: Scanning file cache for directory 'C:/Users/Panda/Documents/Unreal Projects/Jam/Content/Developers/Panda/Collections/' took 0.01s
[2016.08.02-01.00.30:430][ 0]LogFileCache: Scanning file cache for directory 'C:/Users/Panda/Documents/Unreal Projects/Jam/Content/Collections/' took 0.01s
[2016.08.02-01.00.30:430][ 0]LogCollectionManager: Rebuilt the GUID cache for 0 collections in 0.000002 seconds
[2016.08.02-01.00.30:436][ 0]LogContentBrowser: Native class hierarchy populated in 0.0062 seconds. Added 2062 classes and 375 folders.
[2016.08.02-01.00.30:439][ 0]LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
[2016.08.02-01.00.30:439][ 0]LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
[2016.08.02-01.00.30:439][ 0]LogContentBrowser: Native class hierarchy updated for 'GameplayTags' in 0.0003 seconds. Added 12 classes and 0 folders.
[2016.08.02-01.00.30:443][ 0]LogContentBrowser: Native class hierarchy updated for 'WidgetCarousel' in 0.0003 seconds. Added 0 classes and 0 folders.
[2016.08.02-01.00.30:473][ 0]LogContentBrowser: Native class hierarchy updated for 'AddContentDialog' in 0.0003 seconds. Added 0 classes and 0 folders.
[2016.08.02-01.00.30:475][ 0]LogContentBrowser: Native class hierarchy updated for 'SceneOutliner' in 0.0003 seconds. Added 1 classes and 2 folders.
[2016.08.02-01.00.30:485][ 0]LogCrashTracker: Crashtracker disabled due to settings.
[2016.08.02-01.00.30:488][ 0]LogUObjectGlobals:Warning: Failed to find object 'Class None.'
[2016.08.02-01.00.30:513][ 0]LogContentBrowser: Native class hierarchy updated for 'HierarchicalLODOutliner' in 0.0003 seconds. Added 1 classes and 2 folders.
[2016.08.02-01.00.30:513][ 0]LogLoad: Full Startup: 4.22 seconds (BP compile: 0.08 seconds)
[2016.08.02-01.00.30:513][ 0]LogExternalProfiler: Found external profiler: VSPerf
[2016.08.02-01.00.30:513][ 0]LogExternalProfiler: Using external profiler: VSPerf
[2016.08.02-01.00.30:523][ 0]LogOcInput: OculusInput pre-init called
[2016.08.02-01.00.30:541][ 0]LogContentStreaming: Texture pool size now 700 MB
[2016.08.02-01.00.30:658][ 0]LogRenderer: Reallocating scene render targets to support 1240x644 (Frame:2).
[2016.08.02-01.00.30:882][ 2]LogAssetRegistry: Asset discovery search completed in 2.3663 seconds
[2016.08.02-01.00.30:883][ 2]LogCollectionManager: Rebuilt the object cache for 0 collections in 0.000001 seconds (found 0 objects)
[2016.08.02-01.00.30:883][ 2]LogCollectionManager: Fixed up redirectors for 0 collections in 0.000025 seconds (updated 0 objects)
[2016.08.02-01.00.33:071][219]LogLinker:Warning: Asset '../../../../../../Users/Panda/Documents/Unreal Projects/Jam/Content/MT_Parents/Textures/TX_ParentPlaceholder_Ems.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2016.08.02-01.00.33:233][219]LogWindows: Windows GetLastError: The operation completed successfully. (0)