Unreal Engine Issues

Material Editor Assertion Crash When Collapsing Material Attributes

Collapsed material attribute nodes cause an editor assertion crash in the material editor when viewed or opened. Assertion failed: (Index >= 0) & (Index < ArrayNum): Array index out of bounds: 0 fr ...

iOS Launch On does not copy content to iOS/TVOS 13 devices

DeploymentServer fails to transfer the files LogPlayLevel: ********** DEPLOY COMMAND STARTED ********** LogPlayLevel: Running: F:\UE4-Release-4.23\Engine\Binaries\DotNET\IOS\DeploymentServer.exe ...

[CrashReport] UE4Editor-ApplicationCore.dylib!invocation function for block in FMacApplication::DeferEvent()

This is an infrequent Mac crash in 4.18.1. Users have not provided any descriptions. Callstack from Log2017.11.27-02.08.07:839][947]LogMaterial: Missing cached shader map for material FLightmassMat ...

Fix center of mass calculations with welding.

Welding components uses precomputed weights for to determine center of mass for the actor. This can cause problems when users want to specify custom weights for certain components. ...

Fix TSR velocity extrusion on rotating

Users Unable to create C++ Projects

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 ...

Niagara Position Mode Unset results in World Space rather than Local Space

When an emitter's Position Mode is Unset, the particles spawn in World Space 0,0,0. This is unexpected. If the Position Mode is Unset in 5.4, the particles remain in Local Space, which is the inten ...

sphere collision with start and end points set to the same value return no hit objects

Sphere collision with start and end points set to the same value return no hit objects. Workaround Set the end vector to 1 away from the start vector (0,0,0 to 1,1,1, etc.) Regression (no) issue ...

Origin Shifting Landscape crashes Render Thread

Shifting the world origin with a landscape in the level causes a crash in the render thread. This does not crash in 4.23.1 (CL-9631420). This was reported and tested in 4.24.1 (CL-10757647) and rep ...

[CrashReport] UE4Editor_ClothingSystemEditor!UClothingAssetFactory::CreateFromSkeletalMesh() [clothingassetfactory.cpp:357]

This is a trending crash occurring in 4.17 and 4.17.1. Users have not provided any descriptions of their actions when the crash occurred. Source Context 345 if(Params.bTryAutoFix && Param ...