Unreal Engine Issues

Importing a 16x16km landscape at 0.5m resolution crashes Unreal (not enough VRAM)

Custom Primitive Data crash when used from Static Mesh Comp attached to BP Actor

When trying to edit custom primitive data on static meshes attached to a BP actor, an out of bounds access will occur. This does not occur when the static mesh is simply on a regular Actor (Same rep ...

Adding Megascans 3D objects to a scene can cause Twinmotion to freeze and Crash on macOS.

Looking 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.

This 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.

Randomly 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

When 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

User 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)

Error 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.

Attached 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

UBT 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 ...