Unreal Engine Issues
Unreal Engine Issues
PATH not passed to NMake script when building Android from Visual Studio
UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 25, 2023After upgrading from UE5.0.3 to UE5.1, we started seeing this error when trying to build Android Development from Visual Studio (VS2022 17.2.1): Running UnrealBuildTool: dotnet "..\..\Engine\Binari ...
wire import crash on file generated by alias 2021.3
UE - Editor - Content Pipeline - Import and Export - Jul 20, 2021Our company has updated Alias to 2021.3.1 and now Datasmith crashed when importing .wire files. Previously we had Alias 2019 and Alias 2021.1 installed. Now just Alias 2021.3.1 and then the issue be ...
Illegal reference to private object when cooking a child level sequence with a time warp track
UE - Anim - Sequencer - Apr 28, 2025Slack: [Link Removed] Cook error: UATHelper: Cooking (Windows): LogSavePackage: Warning: UATHelper: Cooking (Windows): Referencers of MovieSceneTimeWarpSection /Game/ChildSequence.ChildSequence: ...
PDI-DrawPoint - Zoomfactor being calculated incorrectly
UE - Graphics Features - Feb 20, 2017A licensee has reported that the ZoomFactor variable inside of the DrawPoint function is being calculated incorrectly. It currently is calculated using the lesser of the projection matrix's horizont ...
Possessing and Unpossessing a Pawn when using NetCulling causes the Client to lock up
UE - Networking - Aug 1, 2019In this test bench, they are using a APawn with a custom replicated Movement Component rather than using a ACharacter and they are getting a different result that ends up in a permanent softlock of ...
D3D12 uses a lot more memory than D3D11
UE - Graphics Features - Nov 4, 2015We’re aware of some extra memory usage in the DX12, but 100% more is more than we’ve seen! I think it’s multiple sources that is causing the increase in usage but not all are known. For example, I’v ...
[CrashReport] UE4Editor-CoreUObject.dylib!FArchiveAsync2::Serialize()
UE - Foundation - Core - Cooker - Nov 2, 2017This is an infrequent Mac crash that has occurred for a few users between 4.17 and 4.18. Users have not provided any descriptions of their actions when the crash occurred. Callstack from Log[2017 ...
Compilation error when using Particle SubUV in Niagara Mesh Particles with Raytracing enabled.
UE - Niagara - Oct 12, 2021The licensee has shared the following workaround for modifying NiagaraMeshVertexFactory.ush. struct FVertexFactoryInterpolantsVSToPS { TANGENTTOWORLD_INTERPOLATOR_BLOCK #if USE_PARTICLE_SUBU ...
FStateTreeExecutionContext::GetDebugInfoString() outputs wrong info and crashes when using linked state trees
UE - AI - Debugging - Apr 17, 2025When using State Trees, the AI Debugger can be accessed during play to show information about their current execution state. If a behavior tree is currently in a state that references a linked tree, ...
When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build
UE - Graphics Features - Dec 6, 2018If disable PCH in Target.cs, an error will occur when building for Android. The log is as follows. LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../Vu ...