Unreal Engine Issues

PhysX Crash when Spawning Destructible Meshes at Runtime

I was only able to reproduce this issue after receiving the user's project. The project he provided crashes when I follow his directions, but after looking at the blueprints involved in the crash r ...

Crash in ReflectionCaptureComponent::ReadbackFromGPUAndSaveDerivedData()

See UDN. Crash during autosave. ...

[CrashReport] UE4Editor_XAudio2!FXAudio2SoundSource::PrepareForInitialization() [xaudio2source.cpp:517]

joseph.w - attempting to PIE in advanced vehicle blueprint templateCrash when selecting pie ...

D3D12 uses a lot more memory than D3D11

We’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 ...

FSocketSubsystemWindows::TranslateErrorCode asserts on ERROR_FILE_NOT_FOUND

Even though it's undocumented, Windows can reportedly return ERROR_FILE_NOT_FOUND from WSAErrorCode. We should handle this case, see additional info URL. ...

CharacterMovementComponent::ApplyRepulsionForce uses the BodyIndex incorrectly as a bone index

The code to extract the FBodyInstance from the overlapping component is incorrectly interpreting the Overlap.BodyIndex as a BoneIndex. This results in incorrect bodies getting the force applied, as ...

FInterpCurve::InaccurateFindNearestOnSegment doesn't correctly find points on the section connecting last to first points in a closed loop

MAC: UE4 Editor crashes in gldReadTextureData on Nvidia 330M

A user is reporting semi-regular crashes on his MBP 6,2, with Nvidia 330M GPU. This is a GL 3.3 GPU which we don't routinely test against, he may have the 256 or 512MB model, but this is unclear. T ...

Maya navigation controls do not work as expected while Lock Viewport to Actor is enabled

Maya navigation controls do not work as expected while Lock Viewport to Actor is enabled. The camera appears to behave the same as it would normally, but the actor the viewport is locked to is moved ...

BlueprintNativeEvents with no return value (void) cannot be overridden in Blueprints.

BlueprintNativeEvents (and BlueprintImplementableEvents) are not available to be overridden in a Blueprint Graph if they do not return a value. This affects both functions present in source code, as ...