Unreal Engine Issues

Build Error when using ENUM without 0 entry

BuildCookRun fails to package if the -build parameter is used and debug symbols have not been installed in the binary Engine

Attempting to package a code project using BuildCookRun does not complete the package process successfully if the -build parameter is included. With the -build parameter included, the process fails ...

Adding a new component to a parent class breaks child Blueprints

See UDN(308147): [Link Removed] ...

Blueprint's location reset to 0, 0, 0 after being detached in a network environment

Attaching / Detaching a blueprint actor to a player in a network environment causes location errors when the detach occurs. Even without the attach events being replicated or the blueprint's movemen ...

Morph Target Sets to Zero When Transitioning From 1 to -1 Causing Flickering

-Morph target cycles through all values instead of only alternating between 1 and -1 -Couldn't reproduce in 4.17 -attached a test morph target asset Link to example video from user: [Link Removed] ...

Engine/Extras/MayaLiveLink Folder Not Appearing in 4.19 Installation Directories

In 4.19 installations, the Engine/Extras/MayaLiveLink folder is missing. This is preventing users from being able to access it. The release notes state "You can find pre-built binaries of the Maya ...

NavLink component does not account for the cost of the path set by AreaClass

In the test case, the NavLink component has a navigation cost of 1000000000. When the AI navigates to the NavLink the printed cost is only 2677. It is believed that the AreaClass isn't being taken i ...

Changing "Coordinate Light Map Index" When "Generate Lightmap UVs" Is Enabled In A Static Mesh Crashes Engine

When altering "Coordinate Light Map Index" in a static mesh when "Generate Lightmap UVs" is enabled in LOD 0 the engine will crash or "Coordinate Light Map Index" will be set to 0. A demonstration ...

Updating C++ projects with Marketplace plugins in 4.25.2 fails to build project

Projects created in previous engine versions fail to build in 4.25.2Running D:/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="D:/Unreal Projects/MyProject4 ...

Compile 'Note' on BP Interface events

Compile 'Note' on BP Interface events. It happens in actor BPs and also BP Widgets. A similar issue was fixed back in 4.11 with Custom Events. Could be related? https://jira.it.epicgames.net/brows ...