Unreal Engine Issues

Crash due to LAN beacon packet incompatibility in 4.22

We changed the IP address serialization format without bumping the LAN beacon packet version. Should just need to bump it up. ...

[CrashReport] Fatal Error: Ran out of memory - GenerateInstancedStereoCode() shadercompiler.cpp

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 174 if (GWarn) 175 { ...

[CrashReport] UE4Editor-D3D12RHI!static void SetRayTracingHitGroup(class FD3D12CommandContext & const, class FD3D12RayTracingShaderTable *,

Generated from CrashReporter Error Message: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000088 User message (Aritzia_Bistro.log): datasmith re-import ...

Send "Enter Key" is not working with press and release key in Web Browser plugin

When trying to send the Enter Key to Web Browser using the Press and Release function, it does not work. This function works with any other key that you try to send. A repro project is attached tha ...

Mobile Deferred Shading enabled and Preview Level Android Vulkan will crash the editor

FBX Export - StaticMesh export to FBX crashes if UVElements has more channels than VertexInstanceUVs

As indicated in the repro steps, we have a StaticMesh asset that, for some reason, has a mismatch in their serialized bulk data where:MeshDescription->GetNumUVElementChannels() == 2FStaticMeshConstA ...

[CrashReport] UE4Editor-MetalRHI!MetalLLM::LogAllocTexture(mtlpp::Device&, mtlpp::TextureDescriptor const&, mtlpp::Texture const&) [MetalLLM.cpp:240]

Generated from CrashReporter ...

Editing sets and maps of structures does not correctly check for duplicates

Customer created a custom DataTable with a TSet Property and saw the behavior of allowing duplicate elements within the TSet, which is not allowed. See TSet Documentation for more information. This ...

[CrashReport] UE4Editor-MetalShaderFormat!SingleCompilerSetup(EAppleSDKType) [MetalShaderCompiler.cpp:716]

Generated from CrashReporter ...

Crash When Loading a SubLevel With HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the Levels Window

The editor crashes when loading a SubLevel with HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the levels window. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# ...