Unreal Engine Issues
Unreal Engine Issues
Crash after changing either the Anim Start or End times of an Animation Composite
UE - Anim - Runtime - Jul 19, 2022This is a regression tested in //UE4/Release-4.27 CL#18319896 Crash after changing either the Anim Start or End times of an Animation Composite when using Enter to confirm their value. ...
Crash with SceneCapture DepthPrepassOptimization enabled
UE - Rendering - Architecture - May 22, 2026Level asset "Diff against depot" opens P4 Merge tool
UE - World Creation - Worldbuilding Tools - Mar 1, 2024You can right click a level asset in the editor's Content Browser and do the action Source Control > Diff against Depot. However, this does not provide a useful diff window. It currently opens the d ...
Crash when entering Brush Editing mode with a Sequence spawnable Post process volume
UE - Graphics Tools - Modeling Tools - BSP - Mar 18, 2024Crash with Assertion failed shortly after launching packaged First Person CPP project on Oculus Mobile - Referencing SparseArray.h:86/87
UE - Platform - XR - Apr 30, 2019The following assertion throws after the project crashes when playing on the device: Assertion failed: Index < GetMaxIndex() [File:D:/P4Workspaces/Switch_3/Engine/Source/Runtime/Core/Public/Contai ...
Destroying a welded actor is causing an Array index out of bounds crash on 5.6
UE - Simulation - Core - Jul 30, 2025Destroying a welded actor is causing an Array index out of bounds crash on 5.6. The licensee has provided a repro project that reliably causes a crash whenever the spawned actor is destroyed. There ...
[CrashReport]UnrealEditor-DatasmithImporter!FDatasmithImporterHelper::ImportInternal(UFactory *) [DatasmithImporterHelper.cpp:218]
UE - Editor - Content Pipeline - Datasmith - Jul 18, 2022Generated from CrashReporter ...
HLOD Build crashing when building nanite for mesh with 2 material having the same parameters
UE - World Creation - Worldbuilding Tools - HLOD - Dec 2, 2023From Licensee: Catching the exception with debugger allowed us to find a list of materials on the hlod mesh on which the error occured and we were then able to link it to one of our meshes causing ...
Crash in reinstancing after removing a variable from a component and compiling
UE - Gameplay - Blueprint Compiler - Jun 6, 2023Adding a new macro to a Blueprint Macro Library after renaming the first macro causes a crash
UE - Gameplay - Blueprint - Mar 17, 2022It seems the editor crashes when adding a new Macro to a Blueprint Macro Library. This only occurs if you rename the macro that gets automatically created when you open the macro library to somethin ...