Hello, trying to cook a project in 2025.3.0 and getting an error I can't troubleshoot. I just upgraded to 2025.3.0, Visual Studio is up to date.
Log is below:
LogUObjectHash: Compacting FUObjectHashTables data took 1.05ms
LogMonitoredProcess: Running Serialized UAT: [ cmd.exe /c ""C:/Program Files/Aximmetry/2025.3.0_UnrealEngine/Engine/Build/BatchFiles/RunUAT.bat" BuildCookRun -nop4 -utf8output -nocompileeditor -skipbuildeditor -cook -platform=Win64 -installed -project="C:/Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/Nov2025_Test.uproject" -unrealexe="C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Binaries\Win64\UnrealEditor-Cmd.exe" -stage -package -build -pak -iostore -compressed -clientconfig=Shipping -nodebuginfo" -nocompile -nocompileuat ]
LogStreaming: Display: FlushAsyncLoading(331): 1 QueuedPackages, 0 AsyncPackages
UATHelper: Cooking (Windows): Running AutomationTool...
UATHelper: Cooking (Windows): Using bundled DotNet SDK version: 8.0.300 win-x64
UATHelper: Cooking (Windows): Starting AutomationTool...
UATHelper: Cooking (Windows): Parsing command line: BuildCookRun -nop4 -utf8output -nocompileeditor -skipbuildeditor -cook -platform=Win64 -installed -project="C:/Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/Nov2025_Test.uproject" -unrealexe="C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Binaries\Win64\UnrealEditor-Cmd.exe" -stage -package -build -pak -iostore -compressed -clientconfig=Shipping -nodebuginfo -nocompile -nocompileuat
UATHelper: Cooking (Windows): Initializing script modules...
UATHelper: Cooking (Windows): Total script module initialization time: 0.19 s.
UATHelper: Cooking (Windows): Using C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe
UATHelper: Cooking (Windows): Executing commands...
UATHelper: Cooking (Windows): Setting up ProjectParams for C:\Users\Midwest Virtual\Documents\Unreal Projects\Nov2025_Test\Nov2025_Test.uproject
UATHelper: Cooking (Windows): ********** COOK COMMAND STARTED **********
UATHelper: Cooking (Windows): Running UnrealEditor Cook for project C:\Users\Midwest Virtual\Documents\Unreal Projects\Nov2025_Test\Nov2025_Test.uproject
UATHelper: Cooking (Windows): Commandlet log file is C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Programs\AutomationTool\Saved\Cook-2025.12.07-14.15.22.txt
UATHelper: Cooking (Windows): Running: C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Binaries\Win64\UnrealEditor-Cmd.exe "C:\Users\Midwest Virtual\Documents\Unreal Projects\Nov2025_Test\Nov2025_Test.uproject" -run=Cook -TargetPlatform=Windows -unversioned -fileopenlog -abslog="C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Programs\AutomationTool\Saved\Cook-2025.12.07-14.15.22.txt" -stdout -CrashForUAT -unattended -NoLogTimes
UATHelper: Cooking (Windows): LogInit: Display: Running engine for game: Nov2025_Test
UATHelper: Cooking (Windows): LogCore: Display: Requested channels: 'cpu,gpu,frame,log,bookmark,screenshot,region'
UATHelper: Cooking (Windows): LogTrace: Display: Control listening on port 35497
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : platform="Windows"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : config="Development"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : buildversion="UE5-CL-0"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : engineversion="5.6.1-0+UE5"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : os="Windows 10 (22H2) [10.0.19045.6466] "
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : cpu="GenuineIntel|Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : pgoenabled="0"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : pgoprofilingenabled="0"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : ltoenabled="0"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : asan="0"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : commandline="" "C:\Users\Midwest Virtual\Documents\Unreal Projects\Nov2025_Test\Nov2025_Test.uproject" -run=Cook -TargetPlatform=Windows -unversioned -fileopenlog -abslog="C:\Program Files\Aximmetry\2025.3.0_UnrealEngine\Engine\Programs\AutomationTool\Saved\Cook-2025.12.07-14.15.22.txt" -stdout -CrashForUAT -unattended -NoLogTimes""
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : loginid="af203bdf490fd7b654d68e8c4e9d5338"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : llm="0"
UATHelper: Cooking (Windows): LogPluginManager: Warning: The same version (v2) of plugin 'LightForge' exists at '../../../Engine/Plugins/LightForge/LightForge.uplugin' and '../../../Engine/Plugins/Marketplace/LightForge/LightForge.uplugin' - second location will be ignored.
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : systemresolution.resx="1280"
PackagingResults: Warning: The same version (v2) of plugin 'LightForge' exists at '../../../Engine/Plugins/LightForge/LightForge.uplugin' and '../../../Engine/Plugins/Marketplace/LightForge/LightForge.uplugin' - second location will be ignored.
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : systemresolution.resy="720"
UATHelper: Cooking (Windows): LogAudio: Display: Audio Device Manager not initializing due to all audio being disabled. If this is not intentional, please check command line arguments for "-nosound".
UATHelper: Cooking (Windows): LogConfig: Display: Loading IOS ini files took 0.06 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading Android ini files took 0.08 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading Mac ini files took 0.08 seconds
UATHelper: Cooking (Windows): LogAssetRegistry: Display: Asset registry cache read as 68.1 MiB from ../../../../../../Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/Intermediate/CachedAssetRegistry_0.bin.
UATHelper: Cooking (Windows): LogConfig: Display: Loading TVOS ini files took 0.11 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading Unix ini files took 0.12 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading LinuxArm64 ini files took 0.12 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading VulkanPC ini files took 0.07 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading Linux ini files took 0.14 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading VisionOS ini files took 0.07 seconds
UATHelper: Cooking (Windows): LogConfig: Display: Loading Windows ini files took 0.07 seconds
UATHelper: Cooking (Windows): RenderDocPlugin: Display: RenderDoc plugin will not be loaded. Use '-AttachRenderDoc' on the cmd line or enable 'renderdoc.AutoAttach' in the plugin settings.
UATHelper: Cooking (Windows): LogHAL: Display: Platform has ~ 64 GB [68583456768 / 68719476736 / 64], which maps to Largest [LargestMinGB=32, LargerMinGB=12, DefaultMinGB=8, SmallerMinGB=6, SmallestMinGB=0)
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : extradevelopmentmemorymb="0"
UATHelper: Cooking (Windows): LogTextureFormatASTC: Display: ASTCEnc version 5.0.1 library loaded
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatASTC
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatDXT
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatETC2
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatIntelISPCTexComp
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatUncompressed
UATHelper: Cooking (Windows): LogTextureFormatOodle: Display: Oodle Texture TFO init; latest sdk version = 2.9.13
UATHelper: Cooking (Windows): LogTextureFormatOodle: Display: Oodle Texture loading DLL: oo2tex_win64_2.9.13.dll
UATHelper: Cooking (Windows): LogTextureFormatOodle: Display: Oodle Texture loading DLL: oo2tex_win64_2.9.5.dll
UATHelper: Cooking (Windows): LogTextureFormatManager: Display: Loaded Base TextureFormat: TextureFormatOodle
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_ASTC'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_DXT'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_ETC2'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_OpenXR'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'AndroidClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_ASTCClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_DXTClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_ETC2Client'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_OpenXRClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_Multi'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Android_MultiClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Linux'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxEditor'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxServer'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxArm64'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxArm64Server'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'LinuxArm64Client'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'Windows'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'WindowsEditor'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'WindowsServer'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Loaded TargetPlatform 'WindowsClient'
UATHelper: Cooking (Windows): LogTargetPlatformManager: Display: Building Assets For Windows
UATHelper: Cooking (Windows): LogAudioDebug: Display: Lib vorbis DLL was dynamically loaded.
UATHelper: Cooking (Windows): LogObj: Display: Attempting to load config data for Default__SlateThemeManager before the Class has been constructed/registered/linked (likely during module loading or early startup). This will result in the load silently failing and should be fixed.
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : verbatimrhiname="Null"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : rhiname="Null"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : rhifeaturelevel="SM6"
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : shaderplatform="PCD3D_SM6"
UATHelper: Cooking (Windows): LogDerivedDataCache: Display: Memory: Max Cache Size: -1 MB
UATHelper: Cooking (Windows): LogDerivedDataCache: Display: ../../../../../../Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/DerivedDataCache/Compressed.ddp: Opened pak cache for reading. (189 MiB)
UATHelper: Cooking (Windows): LogDerivedDataCache: Display: ../../../Engine/DerivedDataCache/Compressed.ddp: Opened pak cache for reading. (41 MiB)
UATHelper: Cooking (Windows): LogZenServiceInstance: Display: Unreal Zen Storage Server HTTP service at [::1]:8558 status: OK!.
UATHelper: Cooking (Windows): LogDerivedDataCache: Display: ZenLocal: Using ZenServer HTTP service at http://[::1]:8558/ with namespace ue.ddc status: OK!.
UATHelper: Cooking (Windows): LogDerivedDataCache: Display: C:/Users/Midwest Virtual/AppData/Local/UnrealEngine/Common/DerivedDataCache: Performance: Latency=0.02ms. RandomReadSpeed=1337.87MBs, RandomWriteSpeed=258.15MBs. Assigned SpeedClass 'Local'
UATHelper: Cooking (Windows): LogUbaHorde: Display: UBA/Horde Configuration [Uba.Provider.Horde]: Not Enabled
UATHelper: Cooking (Windows): LogShaderCompilers: Display: Using 7 local workers for shader compilation
UATHelper: Cooking (Windows): LogShaderCompilers: Display: Compiling shader autogen file: ../../../../../../Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/Intermediate/ShaderAutogen/PCD3D_SM6/AutogenShaderHeaders.ush
UATHelper: Cooking (Windows): LogShaderCompilers: Display: Autogen file is unchanged, skipping write.
UATHelper: Cooking (Windows): LogEditorDomain: Display: EditorDomain is Disabled
UATHelper: Cooking (Windows): LogAssetRegistry: Display: AssetDataGatherer spent 0.000s loading caches ../../../../../../Users/Midwest Virtual/Documents/Unreal Projects/Nov2025_Test/Intermediate/CachedAssetRegistry_*.bin.
UATHelper: Cooking (Windows): LogDeviceProfileManager: Display: Deviceprofile LinuxArm64Editor not found.
UATHelper: Cooking (Windows): LogDeviceProfileManager: Display: Deviceprofile LinuxArm64 not found.
UATHelper: Cooking (Windows): LogCsvProfiler: Display: Metadata set : deviceprofile="WindowsEditor"
UATHelper: Cooking (Windows): LogStreaming: Display: FlushAsyncLoading(1): 1 QueuedPackages, 0 AsyncPackages
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/Functions/Engine_MaterialFunctions01/Shading/PowerToRoughness (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/Functions/Engine_MaterialFunctions01/Shading/PowerToRoughness because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/Functions/Engine_MaterialFunctions01/Shading/PowerToRoughness (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/Functions/Engine_MaterialFunctions01/Shading/ConvertFromDiffSpec (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/Functions/Engine_MaterialFunctions01/Shading/ConvertFromDiffSpec because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/Functions/Engine_MaterialFunctions01/Shading/ConvertFromDiffSpec (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/WorldGridMaterial (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/EngineMaterials/T_Default_Material_Grid_M because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/EngineMaterials/T_Default_Material_Grid_N because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/Functions/Engine_MaterialFunctions01/Opacity/CameraDepthFade because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultDeferredDecalMaterial (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/WorldGridMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultLightFunctionMaterial (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/DefaultDeferredDecalMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultPostProcessMaterial (state: WaitingForIo) recursively from another package /Engine/EngineMaterials/DefaultLightFunctionMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultLightFunctionMaterial is adding a dynamic import to package /Engine/EngineMaterials/DefaultDiffuse because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultLightFunctionMaterial is adding a dynamic import to package /Engine/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultLightFunctionMaterial is adding a dynamic import to package /Engine/EngineMaterials/DefaultPostProcessMaterial because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultPostProcessMaterial (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/DefaultLightFunctionMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultDeferredDecalMaterial is adding a dynamic import to package /Engine/EngineMaterials/DefaultLightFunctionMaterial because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultLightFunctionMaterial (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/DefaultDeferredDecalMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/WorldGridMaterial is adding a dynamic import to package /Engine/EngineMaterials/DefaultDeferredDecalMaterial because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/DefaultDeferredDecalMaterial (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/WorldGridMaterial (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogStreaming: Display: Package /Engine/EngineMaterials/DefaultTextMaterialOpaque is adding a dynamic import to package /Engine/EngineMaterials/WorldGridMaterial because of a recursive sync load
UATHelper: Cooking (Windows): LogStreaming: Display: Flushing package /Engine/EngineMaterials/WorldGridMaterial (state: DeferredPostLoad) recursively from another package /Engine/EngineMaterials/DefaultTextMaterialOpaque (state: CreateLinkerLoadExports) will result in a partially loaded package to avoid a deadlock.
UATHelper: Cooking (Windows): LogTextureEncodingSettings: Display: Texture Encode Speed: Final (cook).
UATHelper: Cooking (Windows): LogTextureEncodingSettings: Display: Oodle Texture Encode Speed settings: Fast: RDO Off Lambda=0, Effort=Normal Final: RDO Off Lambda=0, Effort=Normal
UATHelper: Cooking (Windows): LogTextureEncodingSettings: Display: Shared linear texture encoding: Disabled
UATHelper: Cooking (Windows): LogMeshReduction: Display: Using QuadricMeshReduction for automatic static mesh reduction
UATHelper: Cooking (Windows): LogMeshReduction: Display: Using SkeletalMeshReduction for automatic skeletal mesh reduction
UATHelper: Cooking (Windows): LogMeshReduction: Display: Using ProxyLODMeshReduction for automatic mesh merging
UATHelper: Cooking (Windows): LogMeshReduction: Display: No distributed automatic mesh merging module available
UATHelper: Cooking (Windows): LogVirtualization: Display: VirtualizationSystem name found in ini file: None
UATHelper: Cooking (Windows): LogVirtualization: Display: FNullVirtualizationSystem mounted, virtualization will be disabled
UATHelper: Cooking (Windows): LogWorldPartition: Display: FWorldPartitionClassDescRegistry::Initialize started...
UATHelper: Cooking (Windows): LogWorldPartition: Display: FWorldPartitionClassDescRegistry::Initialize took 2.442 ms
UATHelper: Cooking (Windows): LogMetaSound: Display: MetaSound Page Target Initialized to 'Default'
UATHelper: Cooking (Windows): LogAudio: Display: Registering Engine Module Parameter Interfaces...
UATHelper: Cooking (Windows): LogWindows: Error: appError called: Assertion failed: CurrentBaseApplication.IsValid() [File:E:\Build_Final\UnrealEngine\Engine\Source\Runtime\SlateCore\Public\Application\SlateApplicationBase.h] [Line: 554]
UATHelper: Cooking (Windows): LogWindows: Error: begin: stack for UAT
UATHelper: Cooking (Windows): LogWindows: Error: Assertion failed: CurrentBaseApplication.IsValid() [File:E:\Build_Final\UnrealEngine\Engine\Source\Runtime\SlateCore\Public\Application\SlateApplicationBase.h] [Line: 554]
UATHelper: Cooking (Windows): LogWindows: Error:
UATHelper: Cooking (Windows): LogWindows: Error:
UATHelper: Cooking (Windows): LogWindows: Error:
UATHelper: Cooking (Windows): LogWindows: Error:
UATHelper: Cooking (Windows): LogWindows: Error: end: stack for UAT
UATHelper: Cooking (Windows): LogWindows: Error: === Critical error: ===
PackagingResults: Error: appError called: Assertion failed: CurrentBaseApplication.IsValid() [File:E:\Build_Final\UnrealEngine\Engine\Source\Runtime\SlateCore\Public\Application\SlateApplicationBase.h] [Line: 554]
PackagingResults: Error: begin: stack for UAT
PackagingResults: Error: Assertion failed: CurrentBaseApplication.IsValid() [File:E:\Build_Final\UnrealEngine\Engine\Source\Runtime\SlateCore\Public\Application\SlateApplicationBase.h] [Line: 554]
PackagingResults: Error: end: stack for UAT
PackagingResults: Error: === Critical error: ===
UATHelper: Cooking (Windows): LogWindows: Error:
UATHelper: Cooking (Windows): Took 4.21s to run UnrealEditor-Cmd.exe, ExitCode=3
UATHelper: Cooking (Windows): Cook failed.
UATHelper: Cooking (Windows): (see C:\Users\Midwest Virtual\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Aximmetry+2025.3.0_UnrealEngine\Log.txt for full exception trace)
UATHelper: Cooking (Windows): AutomationTool executed for 0h 0m 5s
UATHelper: Cooking (Windows): AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Cooking (Windows): BUILD FAILED
LogAximmetry: Error: Cooking failed. (Result: "Failed".)
LogStreaming: Display: FlushAsyncLoading(332): 1 QueuedPackages, 0 AsyncPackages
Hi,
This issue is very likely caused by a plugin. Did you also update the plugins you are using if you upgraded from a version of Unreal older than 5.6? Or are you using any plugins at all?
If your plugins were correctly updated, try disabling all plugins that are not built-in (i.e., those that did not come with Unreal by default) to see if that resolves the problem.
Additionally, you can try deleting the Saved/, Intermediate/, and DerivedDataCache/ folders from your project directory, or at least move them to a backup location if your project doesn't have a backup. These folders usually contain files generated by the cooking process to speed up subsequent builds. Deleting or moving them will force Unreal to regenerate this data during the next cook, which can help resolve certain issues.
Warmest regards,