Unreal Engine Issues

Destructing NiagaraParameterStores causes multi threading write conflict

FNiagaraParameterStore::UnbindAll() may be called from both GameThread and RenderingThread. Each may modify the same Binding array, it causes infrequent crashes. In my environment, I was able to r ...

Crash can occur when loading a sub level that contains an actor with a child actor component

A licensee is reporting a crash where loading a sublevel that contains an actor with a child actor component can cause a crash. After speaking to Marc Audy, this seems to be related to the initializ ...

BP - Exclusive nativization will fail at cook time if a BP class includes a ChildActorComponent with a Data-Only BP set as the ChildActor class.

Note: This does not occur when the nativization mode is set to "Inclusive" in the Project settings. Current workaround: Ensure that the ChildActor class is NOT a data-only Blueprint, by adding scri ...

Cancelling level save due to previous save crashes editor

If a level has been saved as two different levels and a new save initiated, the editor will crash if the overwrite is cancelled. Frequency 3/3 Regression (Yes) issue (does not) occur in 4.12.5 ...

[CrashReport] UE4Editor_Engine!DoReadTaskResults() [shadercompiler.cpp:147]

Cannot remove overrided interface with in a child after it has been removed from the parent

If a user preforms the following order of a events it can cause an interface to becomes impossible to remove. Create actorCreate interfaceAdd interface to actorCreate child based on actorOverride th ...

[CrashReport] UE4Editor_Landscape!ALandscapeProxy::PostEditChangeProperty() [landscapeedit.cpp:3692]

This is a common crash affecting users in 4.16. Unfortunately they have not provided any additional details. Source Context 3684 // Remove null layer infos 3685 EditorLayerSettings ...

No output pin for created actor on "Create Level Sequence Player"

No output pin for created actor on "Create Level Sequence Player". This originally spawned from a licensee looking for a way to set the "Sequence Player" to a different sequence, but it also showed ...

Project launch options flicker between available and unauthorized/locked

Project launch options flicker between available and unauthorized/locked Unsure what causes this, but I have hit the issue twice. Another person has also seen this on their machine. I was able to ...

Android streaming audio repeats at start if start time is 0.0

An audio file needing decoding (streaming) will repeat at the beginning of play if the start time is 0.0. ...