Unreal Engine Issues

Crash entering PIE without Magic Leap SDK referencing delayhlp.cpp:323

Editor crash when PIEing without ML SDK installed on machine. This did not occur at the same CL on a P4 build. This did not occur on a machine with the ML SDK installed. Does not occur in //UE4/Re ...

Clicking reimport on a skeletal mesh crashes the editor - UE4Editor_Engine!USkeleton::GetSmartNameContainer() [skeleton.cpp:1410]

Information about this goes here....Reimported Skeletal Mesh FBX 2016/2017 in preview window. Didn't crash outside of preview in the standard content browser context menu. ...

Crash when editing members of a struct contained within a UObject instanced inside a USceneComponent

When implementing a USceneComponent in C++, one may want to add one or more internal UObjects to hold some data or perform specific tasks (this is also done by several UE built-in components). These ...

Project crashes when creating a Standalone Window editor plugin, restarting, and immediately playing as Standalone Game

If the user creates a Standalone Window Editor plugin and restarts the editor then immediately plays the game as Standalone Game, the editor hits an assert. [Link Removed] Appears to only happen i ...

[AI] Destroying an actor while using pooled actors with MassActorSpawnerSubsystem causes a nullptr exception crash

If an actor that is used in the pooled actor list of UMassActorSpawnerSubsystem is destroyed, it causes a nullptr exception in UMassActorSpawnerSubsystem::SpawnOrRetrieveFromPool. The subsystem atte ...

Record with timecode as source but false on start at Timecode causes crash

Editor crashes if reopened and a row is selected after moving datatablerow editor window in a csv data table

If a user moves the row editor window in a csv datatable, then saves, closes, and reopens the editor, the editor will crash if the user then attempts to select a datatable row in the csv datatable w ...

Editor crash on level load when bUseActorFolders is true after dragging Actor into another folder in the Outliner

From licensee: Hello! Our level streaming setup enables the bUseActorFolders on our levels. When moving the Actor into another folder via the Outline, the editor will crash on the next load Assert ...

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

Crash when creating deferred decal material when using -d3ddebug command line argument to launch editor

Discovered this while verifying [Link Removed]. Devs informed me of a command line argument that could be used to output D3D11 debug information and using it caused crashes in both //UE4/Main @ CL 3 ...