Unreal Engine Issues

Breaking a level instance can not remove the level instance from world

Currently there is no stable way to break level instances ...

Crash in Blueprint when clicking on Component variable name that remains after Component was deleted

This is a common crash in 4.16 and trending in the 4.17 previews. It can be reproduced by clicking on the name of a variable that remains listed in a Blueprint after the associated component has al ...

FPackedRGBA16N is divide by 32768 twice in NEON/FPU

[CrashReport] UE4Editor_MovieSceneTools!FPropertySection::GetPropertyValue<float>() [propertysection.h:70]

This is a somewhat common crash in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 58 /** Gets the current value of the property w ...

Performing a Hot Reload after changing a custom component code class can make the component unusable in Blueprints, or crash the Editor.

Performing a Hot Reload after altering a custom component code class can make the component unusable in Blueprints, and even crash the Editor. WORKAROUND: Close and re-open the Editor. ...

Loading Duplicated Level via Python API Crashes Editor

When called from Python, in 5.1 the load level invocation results in a kernel panic style crash of the editor, with a message about the map leaking memory and not being able to be garbage collected ...

Game Crash when switching to full screen in Game with Sumsung Odyssey HMD device connected

crash log from lincesee: [2019.11.11-10.34.30:123][228]LogOutputDevice: Warning: Script Stack (0 frames): [2019.11.11-10.34.30:123][228]LogWindows: Windows GetLastError: 操作成功完成。 (0) [2019.11.11-1 ...

When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build

If disable PCH in Target.cs, an error will occur when building for Android. The log is as follows. LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../Vu ...

CRITICAL: Regression: CRASH: SHOOTERGAME: Client crashes when using ServerTravel command

Update (5/4/15): New repro steps using Main (//depot/UE4/Promotable-CL-2535351): 1. Create a new Blueprint project 2. Create 3 new Levels: MainMenu, Lobby, and Level 3. Create 3 new GameModes: Main ...

Project does not cook with actors containing ModularSynth component

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...