Unreal Engine Issues

Editor crash when delete static mesh actor include in HLOD

Crash when precaching PSOs for decals from non-game thread

During async loading from an AsyncLoading thread, DecalComponent attempts to precache PSOs which can trigger a checkf in StrongObjectPtr.h which are only allowed to be created on a game thread. ...

[CrashReporter] UE4Editor-D3D12RHI!CreatePipelineStateFromStream(ID3D12PipelineState * &,ID3D12Device2 *,D3D12_PIPELINE_STATE_STREAM_DESC const *,ID3D12PipelineLibrary1 *,wchar_t const *)

Generated from CrashReporter ...

Certain UPROPERTY values are not updated during auto-recompile

Sometimes manual recompile is required to make a blueprint actually recompile data-only changes, but not always. If the last manual compile was with default values, then changes are not updated. If ...

Divide by zero in beam update can cause editor to crash in Cascade

The licensee has traced the issue back to a divide by zero in  UParticleModuleTypeDataBeam2::Update. If the Target and Source are the same then the beams magnitude will be zero. When there is a Nois ...

Chaos : Crash when destroying part of Geometry collections clustered by AnchorField

Here's a workaround void DestroyParticle(TGeometryParticleHandle<T, d>* Particle) { auto PBDRigid = Particle->CastToRigidParticle(); if(PBDRigid) { RemoveFromMapAndArray(PBDRigid, Ac ...

[CrashReport] UE4Editor-D3D11RHI!FD3D11DynamicRHI::RHIDrawIndexedPrimitive(FRHIIndexBuffer *,int,unsigned int,unsigned int,unsigned int,unsigned int,unsigned int) [D3D11Commands.cpp:1670]

Generated from CrashReporter ...

Crash accessing USplineComponent from Niagara while it is being updated on game thread

I was working with a licensee on something unrelated, and ran into this niagara threading crash. It looks like UNiagaraDataInterfaceSpline::SampleSplinePositionByUnitDistance on one of the niagara h ...

Access violation - code c0000005 (first/second chance not available)

Crash Reporter: [Link Removed] Opening a project created in 4.6.1 with 4.7 built from GitHub branch 20150203 (last commit: 5bac1375be31053932c7b9123cc3bb94c70dd5e0) results in crash. ...

Ensure condition failed : loading sublevels containing reflection captures, UpdateAllReflectionCaptures may be called twice

If sublevels containing multiple reflection captures are loaded in consecutive ticks and the execution timing of UpdateMaxCubemaps on rendering thread is delayed, UpdateAllReflectionCaptures will be ...