Clicking the Add Variable button in a Struct that is referenced as two inputs in a function that is called in an Actor Blueprint's Construction Script causes a crash

UE - Gameplay - Blueprint - Jun 28, 2015

Clicking the Add Variable button in a Struct that is referenced as two inputs in a function that is called in an Actor Blueprint's Construction Script causes a crash. This does not occur in the Even ...

Crash when using StepToNextShot / PreviousShot with sequencer

UE - Anim - Sequencer - Jul 24, 2018

A crash occurs when you press the Shift key + [.] (Period) key after double-clicking on one of the arranged level sequences in the master sequence. The cause is ActiveTemplateIDs of FSequencer. The ...

Crash when importing material assigned to FBX with illegal characters through the Full Scene Importer

UE - Editor - Content Pipeline - Import and Export - Jun 21, 2016

If you have an illegal character (/ or ?) in your material name embedded with your FBX the editor will crash when using the new Full scene importer and selecting the Materials Tab. Tested in and ...

Editor Crashes When Updating Captures on Sphere Reflection Captures

UE - Graphics Features - Feb 20, 2017

Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 633] Array index out of bounds: -1 from an array of size 11 Source Context: 200 CubemapArray.Updat ...

Translucent Unlit Materials render at incorrect Z depths depending on camera

UE - Graphics Features - Sep 15, 2014

Sprites which are layerd on top of one another in a tight pack and have a material set to TranslucentUnlitSprite Material will disappear while moving the camera above and below the editor's 0 grid. ...

Crash after adding Virtual Bone, then Creating Asset

OLD - Anim - Jul 5, 2017

Occurs on? 4.16 - 3466753 - YES 4.17 - 3521650 - YES Error message: Assertion failed: RefBonePose.Num() == NumBones [Link Removed] [Line: 4400] Source Context:4387 ResetAnimation(); 4388 ...

When ParallelExecutor is enabled, Japanese build output of VisualStudio garbled

UE - Foundation - Cpp Tools - Sep 19, 2018

From UE4.20, Japanese build output of VisualStudio garbled. Below is a comparison between 4.19 and 4.20. ・4.19.2 1>------ すべてのリビルド開始: プロジェクト:MyProject3, 構成:Development_Editor x64 ------ 1> Clea ...

CharacterMovementComponent: make crouching behavior compatible with custom gravity direction

UE - Gameplay - Components - Feb 20, 2024

CharacterMovementComponent has recently received support for custom gravity directions. Crouch logic needs to be updated to account for custom directions. Currently, crouching logic in CMC assumes Z ...

CameraRig_Rail actor does not show last index for preview mesh

UE - Anim - Sequencer - Feb 19, 2025

Do not show the last index in the preview mesh display of the CameraRig_Rail actor. The reproduction test case generates a ring of rails, but only the last index is not displayed. Recommended Cod ...

Users Unable to create C++ Projects

UE - Foundation - Core - Mar 6, 2015

2nd AH post with the same issue: https://answers.unrealengine.com/questions/183441/cant-load-c-projects.html Multiple people have reported not being able to create a C++ project. Creating a Bluepr ...