Ensure condition failed: PrimitiveComponent tried to render with Material MaterialInstanceDynamic, which was not present in the component's GetUsedMaterials results

UE - LD & Modeling - Terrain - Landscape - Feb 22, 2017

Top 10 ensure in 4.15. There was a fix submitted for [Link Removed] which was verified as following those steps to reproduce no longer causes this. ...

Child Actor Component visibility doesn't work the first time it is enabled

UE - Gameplay - Feb 21, 2017

Child Actor Component visibility doesn't work the first time it is enabled. This is also the same for the Set Actor Hidden in Game node. ...

Duplicates of Actor Blueprints have a Blank, Black preview Window

UE - Editor - Content Pipeline - Content Browser - Feb 21, 2017

Duplicates of Actor Blueprints have a blank, black preview instead of the preview of the original (See sample image). Not a regression, occurs in UE4.14.3 as well ...

Mesh Overlay always lags behind actual selection

OLD - Anim - Feb 21, 2017

Mesh Overlay always lags behind actual selection. Workaround: Use the skeleton tree to select bones. ...

Spaces are incorrectly converted to new lines when the User Header Search Paths field is populated in Xcode

UE - Platform - Apple - Feb 21, 2017

If there is a space in the name of a folder within the Engine's install path (eg. Users\Shared\Epic Games\...), the values set in the User Header Search Paths field are split into multiple lines whe ...

Crash when building lighting while in PIE

UE - Graphics Features - Feb 21, 2017

NOTE: This issue is similar to (same callstack) as [Link Removed], however this issue is still occurring in 4.15.0. Error Message: Access violation - code c0000005 (first/second chance not availab ...

Inconsistent rendering between left and right eye when r.SeparateTranslucencyScreenPercentage is less than 100

UE - Platform - XR - Feb 21, 2017

Rendering appears to be inconsistent between the left and right eye of the oculus when setting r.SeparateTranslucencyScreenPercentage to a number below 100 (99 in this example) ...

PIE Warnings: Invalid Simulate Options when dragging TEST_PhysicsWakeEvents into Level

OLD - Anim - Feb 21, 2017

The log populates with the PIE Warnings when the asset is dragged into the level WarningsPIE:Warning: Warning Invalid Simulate Options: Body (TEST_PhysicsWakeEvents.CubeDestroyedOnSleep Cube) is se ...

Crash when using Ctrl+Z to undo a single digit change in the size of a widget

UE - Anim - Sequencer - Feb 21, 2017

When trying to undo a single digit change the editor will crash. For example, if a user highlights and replaces a single number in the size of a widget and then attempts to undo, the editor will cra ...

Incorrect error message when child actor mobility doesn't match

UE - Gameplay - Components - Feb 21, 2017

When the mobility type of a child actor component and the class it is spawning are incompatible the error message no longer makes sense. ...