DebugEditor checkLockFreePointerList(TLS.NumPartial >= 0 && ((!!TLS.NumPartial) == (!!TLS.PartialBundle))) fails

UE - Foundation - Core - Feb 6, 2018

Occasionally, the Engine/Editor crashes on startup with an assertion in the lock-free void pointer list. ...

[CrashReporter]UnrealEditor-Engine!UWorldPartition::GenerateStreaming(TArray<FString,TSizedDefaultAllocator<32> > *) [WorldPartitionStreamingGeneration.cpp:570]

UE - World Creation - Worldbuilding Tools - World Partition - May 31, 2022

Generated from CrashReporter user's comment: Everytime I press "Play" in this specific project, the program crashes ...

Some Niagara Fluid systems are not visible in a packaged project

UE - Niagara - Jun 7, 2022

Previously packaging caused a crash with this system. This was fixed, but now the system is no longer visible when packaged. ...

[CrashReport] UE4Editor_Engine!operator new<FBatchedLine,FDefaultAllocator>() [array.h:2812]

OLD - Anim - Jun 2, 2016

Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 804] Array index out of bounds: 175 from an array of size 171 Source Context: 2797 2798 temp ...

[CrashReport] CastChecked<UAnimBlueprint,UBlueprint>()

OLD - Anim - Jul 14, 2017

This is a common crash affecting users in 4.16. Users have not provided additional information. Source context not available ...

Asset Changes Location in Static Mesh Editor When Reimported

UE - Editor - Content Pipeline - Import and Export - Feb 20, 2018

Mesh changes location in the editor and mesh editor when it is reimported through the mesh editor Related: [Link Removed] (crash) ...

BP nativization can generate an invalid path including "__TEMP_BP__"

UE - Gameplay - Blueprint Compiler - Aug 27, 2018

The licensee sent us a BP that can't be nativized correctly on UDN. The nativized BP has wrong paths and causes a crash. ...

[CrashReport] UE4Editor-CoreUObject!FPropertyProxyArchive::operator<<(FField * &) [PropertyProxyArchive.h:45]

UE - Foundation - Cpp Tools - Hot Reload - May 8, 2020

Generated from CrashReporter Error message - Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address [different address per crash] ...

Interchange: racing condition when InterchangeWorker.exe is not built

UE - Editor - Content Pipeline - Import and Export - Jan 30, 2023

Creating/Destroying UWorlds rapidly can cause dangling pointers from UAutoDestroySubsystem

UE - Gameplay - Aug 10, 2020

To summarize what I'm seeing there, a bunch of UObjects relating to that world have been destroyed but not all destructed. The UAutoDestroySubsystem pointer is still on the static tickable list, and ...