Open a level that contains instanced meshes (with built lighting) will crash the editor

UE - Graphics Features - Mar 19, 2015

Open a level that contains instanced meshes will crash the editor. Per the users description, the level must have had lighting built and then another level loaded or the editor restarted. Once the ...

Linux editor can fail on start due to a stale TPS library in Engine/Binaries/Linux

UE - Platform - Linux - May 21, 2015

For 4.8, we moved LinuxNativeDialogs, a third-party library, to a different location (and also changed its API somewhat, so the old library is binary incompatible). However, some users apparently a ...

Gradual drop in Performance on Windows 10 projects after Toggling Fullscreen

Tools - Nov 30, 2015

It seems that when working in any project on a Windows 10 machine, there is a gradual rise in frames per second and a consistent drop in performance. The user reporting this issue claims his frame ...

Slider Values are not working inside of a blueprint

UE - Gameplay - Blueprint - May 7, 2015

Slider Values are not working inside of a blueprint in 4.8 Preview 1. User Description: Problem with the numeric float/int boxes in the editor in Blueprints, if for example open the TPS Template a ...

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 ...

Continuous Crash Problems OSX Upon Save

Tools - Jan 13, 2015

This seems to be a duplicate of JIRA [Link Removed]:https://jira.ol.epicgames.net/browse/UE-7289 User claims the editor crashes every time he goes to save his level or play in editor. Callstack: U ...

Cast modulated shadows causes black screen on iOS with non-default FOV

UE - Platform - Mobile - Oct 14, 2015

Using a FOV other than 90 with Cast Modulated Shadows seems to cause a black screen and weird FOV issues on an iOS device, in 4.9.2. If the camera has FOV=90, it works fine on the iOS device. If th ...

Engine/Extras/MayaLiveLink not provided in install directory

OLD - Anim - Nov 19, 2018

According to the Maya Live Link documentation, the zip file should be provided in the engine installation. https://docs.unrealengine.com/en-us/Engine/Animation/Live-Link-Plugin/Connecting-Unreal-Eng ...

LLM: Delete LLM_IF_ENABLED if it is no longer a performance benefit, or convert all allocs and frees to use it if it still is.

UE - Foundation - Data Pipeline - Cooker - Nov 13, 2023

The macros LLM and LLM_IF_ENABLED behave identically but are slightly different from a performance standpoint. For consistency all allocs and frees should use the same one. Measure the cost of a co ...

Noise Material Expression is rendering outside Min and Max Range with High Position Values

UE - Graphics Features - Mar 31, 2015

The Noise Material Expression is rendering values well outside the Min and Max Range set in the Expression node. Also Reproduced in Main Promotable-CL-2469752 Alerted the user to suspicions and su ...