Unreal Engine Issues

Setting spline in Niagara Override Parameters corrupts system after closing level

The USplineComponent appears to be corrupted. It will pass the null check, but operations done on the data cause the engine to crash. (See the linked UDN for more details) ...

[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE

Adding the Precondition to the SmartObject caused an assertion when it was part of a persistent collection. The precondition needs to be able to pass its Activate method to cause the assert. This b ...

Crash may occur if Actor is selected on the outliner and then discarded

Discarding Actor while it is selected on the outliner may cause a crash. This may be caused by operations from C++ not being listed in the UNDO list, which may refer to unreferenced objects during ...

Crash when adding a spawnable volume to a Level Sequence when Draw Brush Polys is enabled in the level editor

Crash when adding foliage instances to unloaded IFA

Ran into a crash when trying to programmatically add foliage to a large WP level with some unloaded IFAs.  ...

Crash on level change when "Use Single Process" is false and "Play as Client"

When "Use Single Process" is off (unchecked/false) and "Play as Client" is selected, using the console command "Open [LevelName]" causes the editor to crash Regression: No - same behavior occurs in ...

Crash when loading the tutorials for 'Landscape Painting Mode' and 'Landscape Sculpting Mode'

A crash occurs when starting either the Landscape Painting Mode or Landscape Sculpting Mode tutorials. It crashes even if a landscape is already in the level. This is similar to [Link Removed], h ...

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] UnrealEditor-Engine!UStaticMeshComponent::BuildTextureStreamingDataImpl

Generated from CrashReporter ...

Moving a saved duplicate of an OpenWorld level crashes the Editor

Moving a saved duplicate of an OpenWorld level crashes the Editor. The act of moving the duplicated OpenWorld level crashes the Editor the moment the engine tries to delete the original level, so it ...