Unreal Engine Issues
Unreal Engine Issues
Crash in UPCGComponent::CleanupLocalImmediate(bool,bool) on file load
TM - Rendering - May 30, 2025Reported in SF [Link Removed] User has a file that will crash at launch consistently. Crash report indicates the problem is with PCG content inside the file. ...
Editing multiple Math Expressions will crash the editor
UE - Gameplay - Blueprint - Dec 30, 2014Editing multiple Math Expressions will crash the editor. ...
Float Curve that is set as a local variable in an actor's function is garbage collected when in Standalone, causing a crash
UE - Gameplay - Blueprint - Sep 9, 2016If a Curve Float local variable is created for a function, it will be garbage collected when garbage collection occurs. This causes the process to crash due to an null pointer error whenever it is r ...
Fbx importer crash when importing one "line" triangle
Tools - May 23, 2016When we have a mesh containing one triangle with two vertex at the same location the importer is crashing. It crash because rejecting the line triangle result with a mesh containing no vertex which ...
[CrashReport] Crash on Mac due to uncaught exception 'NSRangeException' - HIToolbox!DispatchEventToHandlers()
UE - Platform - Apple - Jun 22, 2017This is a common and longstanding community crash on Mac. Users have not provided descriptions when they crash, so additional information is currently not available. A log file is attached. Call ...
Attempting to open a certain blueprint (NewPickup) crashes project
UE - Gameplay - Blueprint - Jan 16, 2015Acquired a blueprint from a user cannot open it. It crashes project when opening the blueprint "NewPickup" ...
Crash After cutting and pasting a blend radius track in sequencer
UE - Anim - Sequencer - Oct 27, 2017Crash After cutting and pasting a blend radius track in sequencer ...
Origin Shifting Landscape crashes Render Thread
UE - LD & Modeling - Terrain - Landscape - Jan 10, 2020Shifting the world origin with a landscape in the level causes a crash in the render thread. This does not crash in 4.23.1 (CL-9631420). This was reported and tested in 4.24.1 (CL-10757647) and rep ...
4.6.1 to 4.7 conversion crash "Assertion failed: Pin != nullptr ...K2Node_DynamicCast.cpp]"
UE - Gameplay - Blueprint - Feb 25, 2015Several Users are experiencing crashes on importing a 4.6.1 project into 4.7.0 (Release) Here are the crash reporter links: [Link Removed] [Link Removed] [Link Removed] [Link Removed] [Link Removed ...
CRASH: OS X frequently freezes when working with blueprints
UE - Platform - Apple - Dec 2, 2014User complains of frequent crashes when using blueprints and has provided repro steps for one incident that tends to cause a crash. While we are not able to reproduce the issue here, the customer ha ...