Unreal Engine Issues
Unreal Engine Issues
Unreal 4.26 Crashes when playtesting with a groom in the scene
UE - Graphics Features - Jan 8, 2021When you hit play with a groom in the scene, the engine crashes Additional notes: First tried adding it to a skeletal mesh through a character blueprint. Engine crashes. Engine doesn't crash if pla ...
Crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() when quickly unloading then loading a sub-world partition
UE - World Creation - Worldbuilding Tools - Data Layers - Mar 6, 2025From licensee: Since we integrated 5.5, we are experiencing a crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() on this line check(ActiveDataLayerNames.IsEmpty() && LoadedDataLayerN ...
D3D12RHI crash when interacting with UI using dx12 with raytracing enabled
UE - Graphics Features - Feb 12, 2020Enabling raytracing and DirectX12 results in D3D12RHI crash when interacting with the UI or console inside of the editor. User is using the latest drivers and has adequate hardware to run raytraci ...
Crash when using Mesh Reduction on ScotsPine_01 for LOD3
UE - Graphics Features - Jan 30, 2017A crash occurs when trying to use the Mesh Reduction tool for the ScotsPine_01 static mesh from the Open World Demo collection. The assets from this project are usually very processor heavy due to ...
Crash when launching 4.14.2 in cmd window with -dx12 argument
UE - Graphics Features - Jan 3, 2017Launching the editor with DX12 from a command window is crashing the engine. Note Crash occurs on Nvidia version 376.19 and does not occur on 376.33 This is a Regression ...
Crash when starting PIE on a World Partition level with a Niagara Component inside nested Child Actor Components
UE - Niagara - Jun 25, 2024Consider an actor containing a Niagara Particle System Component, which is instantiated from another actor's Child Actor Component. When initializing PIE on a World Partition level containing this s ...
Crash occurs when building lighting on Mac
UE - Graphics Features - Jan 4, 2017The Unreal Editor will crash whenever you try and build lighting. Crash does not occur in: 4.14.2 - 3241561 ...
Editor crash while saving asset during cook operation
UE - CoreTech - Apr 2, 2025It is possible to experience an editor crash in 5.5.4 when the cook process generates a warning that references an asset while the editor is saving. It seems that during a save operation, the code t ...
Struct crashes when switching variable types while the default values are being shown
Tools - Jan 11, 2016If the user switches between two variable types in a struct while the default values are being shown then the editor will crash ...
SSR Experimental Denoiser crashes when enabled using Vulkan
UE - Graphics Features - Apr 27, 2020Enabled the SSR Experimental Denoiser using Vulkan causes the Engine to crash. This crash does not happen with DX11 or DX12. This happens on Linux and Windows (-vulkan). This was reported and teste ...