Unreal Engine Issues
Unreal Engine Issues
Adding Megascans 3D objects to a scene can cause Twinmotion to freeze and Crash on macOS.
TM - Core - Dec 11, 2024Looking at the logs when it happened, the logs are spammed with the following: [2024.12.10-20.34.12:438][514]LogZenServiceInstance: Display: Unreal Zen Storage Server HTTP service at [::1]:8658 sta ...
Crash: Nativized AnimBP instances can assert on load in a cooked build with async loading enabled.
UE - Gameplay - Blueprint - May 9, 2019This is a regression that was introduced alongside a memory optimization for Animation Blueprint assets. Suggested workarounds:Disable "Async Loading Thread Enabled" ORDisable Blueprint nativizati ...
Using ConstructorHelpers::FClassFinder in a GameMode constructor may result in a default value or crash if the level is reloaded multiple times.
UE - Gameplay - Oct 27, 2015Randomly selecting a character class from the GameMode constructor using ConstructorHelpers::FClassFinder can result in default or null character being set when the level is reloaded. It appears tha ...
Using a controller in HTML5 causes error
UE - Platform - Mobile - Mar 17, 2016When using a controller in HTML5, the project crashes within the browser. However, this does not occur on Google Chrome. FireFox/Nightly crashes on launch on as well as packaging and running the pro ...
[CrashReport] libobjc.A.dylib!<Unknown> SEGV_NOOP at 0x0
UE - Platform - Apple - Aug 3, 2015User crashes at "Loading 83%" *See also attached Mac Crash Log. [Link Removed]Launched UE, it crashed upon launch.Ok, a file i wanted to delete, and it just crashed the whole program. Thx.Started e ...
Creating a new user defined struct with the same name as a native declared struct crashes the editor (e.g., "MyStruct" which already exists for some reason)
UE - Gameplay - Blueprint Editor - Mar 31, 2020Error message:Fatal error: [File:G:/UE4/Projekte/4.25/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp] [Line: 2503] Couldn't bind to native struct STRUCT_REINST_MyStruct_0. Headers nee ...
Assertion Failure: Cascade Particle !bPostTickComponentUpdate in same tick group as Cascade Particle system submission.
UE - Niagara - Apr 18, 2019Attached Project: [Link Removed] Since Upgrading project to 4.22, Licensee has been experiencing an Assertion crash in their built game. "I'm not exactly sure why it crashes. It's a very specific ...
Linux: UE_ENGINE_DIRECTORY not being set by UBT
UE - Platform - Linux - Mar 27, 2018UBT is not passing UE_ENGINE_DIRECTORY to GForeignEngineDir because in UEBuildTarget.cs IsCurrentPlatform only checks for Windows and Mac. Because GForeignEngineDir is not set, config files and oth ...
Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true
UE - Graphics Features - Path Tracer - May 16, 2025Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true The licensee has reported: This crash happens because the DeferredShadingRenderer tries to extract the normal GBu ...
[CrashReport] UE4Editor_Engine!FAnimNotifyEvent::IsBranchingPoint() [animtypes.cpp:86]
OLD - Anim - Aug 29, 2017This is a common crash occurring in the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 72 float FAnimNotifyEvent::GetDurati ...