Lighting Build Fails With High Density Foliage

Tools - Foliage - Jan 16, 2018

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

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

Anim - Jan 16, 2018

-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] ...

BindWidget meta tag throws error on compile if the bound widget is inherited

Tools - UMG - Jan 15, 2018

The BindWidget meta specifier allows us to bind a native widget pointer to a widget added to the hierarchy of a UserWidget in the widget editor. However, it appears to only search for a matching wid ...

DirectX Tesselation Crash

Rendering - Dec 12, 2017

Per UDN Licensee: I have 2 crash repro when enabling DirectX12, both linked to tesselation and still present in 4.18 stock engine and easy to reproduce. Crash 1 -Start editor with DirectX12 -Cre ...

Blueprint Function Reorder displays error tooltip when trying to reorder functions

Gameplay - Blueprint Editor - Dec 7, 2017

There is an issue when attempting to reorder blueprints where Blueprint Function Reorder displays error tooltip when trying to reorder functions. In previous engine versions, functions could not be ...

[CrashReport] D3D device lost. (Error: 0x887A0007 - 'RESET')

Rendering - Dec 1, 2017

This is a common 4.18 crash that occurs before projects load. All cases experience the "RESET" error. Possibly just driver issues? Source Context 188 // Workaround for the fact that i ...

Child Actor Component outputs error when child class is set to empty using blutility

Gameplay - Blueprint - Nov 30, 2017

Child Actor Component outputs error when child class is set to empty using blutility I attached repro proj. ...

Packaging failed! toast does not replace the previous toast

Tools - Nov 29, 2017

Packaging failed! toast does not replace the previous toast. Users are able to click the Dismiss button for the most recent toast, but not for any others. The Show Output Log link works on all acti ...