Editor crashes when adding a parameter to a material when using Forward Shading and DX12

UE - Graphics Features - Apr 24, 2019

Setting the default RHI for Windows to DX12 and enabling Forward Shading results in a crash when adding a texture sample parameter to a material. Found in 4.22 CL# 5660361 and 4.23 CL# 6074473 Wor ...

(Undo Crash in BPs) [CrashReport] UE4Editor_Core!rml::internal::Block::findObjectSize()

UE - Gameplay - Blueprint - Jul 25, 2017

This is a trending crash in the 4.17 Preview. There was one occurrence of this callstack months ago in 4.15.1, but a number of recent ones in 4.17. User DescriptionsI was pressing cltr+z severl ti ...

Crash diffing an AnimBP with a node deleted from a State Machine Transition

UE - Gameplay - Blueprint - Mar 10, 2017

Error message: Assertion failed: false [Link Removed] [Line: 1123] Looking for node K2Node_AnimGetter_327 but it cannot be found in provided panels Source Context: 1108 } 1109 111 ...

Reimporting a skeletal mesh by dragging FBX to content browser crashes editor

Tools - Nov 12, 2015

Reimporting a skeletal mesh by dragging FBX to content browser crashes the editor. I suspect something is wrong with the FBX. The user reported that the data is from Blender. FBX file attached for ...

PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node

UE - World Creation - Procedural Tools - PCG Component - May 16, 2024

PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node. ...

Movie play following Open Source crash editor when changing viewport size.

Media Framework - Mar 29, 2017

When playing movie in PIE, changing viewport size leads to Engine crash. This is not reproduced in 4.14.3 ...

Using an integer that is higher than the total members in an enum to select an enum will cause a crash

UE - Gameplay - Blueprint - Sep 21, 2015

If the user uses an integer to select a member of an enum, the enumeration will crash if the integer is higher than the number of members in the enum. ...

Editor crash when Use Dynamic Material Instance is set to "True" on landscape

UE - LD & Modeling - Terrain - Landscape - Mar 23, 2018

Setting "Use Dynamic Material Instance" to true in the landscape details will cause the editor to crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. This feature is not available in 4.18.3. ...

Crash attempting to use a struct containing a deleted struct in a blueprint and compiling

UE - Gameplay - Blueprint Compiler - Sep 21, 2017

REGRESSION: No, occurs in 4.17 (doesn't repro in 4.16 because orphaned pins wasn't a feature) Crash occurs when the user attempts to use a struct containing a deleted struct in a blueprint. ...

Crashes when applying material on objects after changing UV mapping parameters with Lumen enabled.

TM - Core - Jun 20, 2024

Info from the user: "This is super basic, only just started to build the scene. I have modeled in Vectorworks 2024 Architect and imported it into Twinmotion via the export and not the live link. The ...