Unreal Engine Issues
Unreal Engine Issues
Static Meshes that are reimported with less materials can lead to map check errors on instances that had overriden materials that require manual cleanup
UE - Rendering - Architecture - Feb 5, 2025StaticMeshActors placed in the world can override the default materials of a static mesh. If the static mesh is then reimported with less materials, the actors maintain references to unused material ...
BlueprintNativeEvent functions break on hot reload
UE - Gameplay - Blueprint - Mar 7, 2015A blueprint that uses a node for a BlueprintNativeEvent function breaks on hot reload. Blueprint cannot be saved or compiled. Compile error states: Error This blueprint (self) is not a HOTRELOADED ...
SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials
UE - Gameplay - Jan 15, 2015SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials. The user who reported this was trying to add a material to a skeletal mesh during runtim ...
Package game and standalone game crashing (possibly related to UE-6766)
UE - Gameplay - Dec 23, 2014Crashes in UGameplayStatics::GetPlayerController, probably because World is NULL. When you package this vehicle game setup or play in standalone, the game will crash. 4.6.1 release crash (Standalo ...
Crash when setting Project to only use Windows and DX11 with texture compression as BC7
UE - Graphics Features - Jan 11, 2016When user sets their texture compression to BC7 while the project settings are set for Platform to only be Windows and use only DX11 this will cause any textures with this set to cause a crash when ...
Adding a UMG widget to the viewport twice results in a crash.
UE - Editor - UI Systems - Sep 8, 2015Attempting to add the same widget to the viewport twice will result in an assertion and crash. ...
Memory Leak occurring when switching between levels in Standalone
UE - Foundation - Core - Oct 29, 2015A memory leak seems to occur when switching between levels multiple times. This is being monitored by memreport full ...
Crash when unplugging the Oculus Rift HMD while level is loading
UE - Platform - XR - Jan 12, 2017If the user unhooks their Oculus HMD (USB cable) from the PC while a level is loading the editor will crash ...
Ensure when using Ctrl Z to undo painted landscape - UE4Editor_Engine!FPrimitiveSceneProxy::VerifyUsedMaterial() primitivesceneproxy.cpp:599
UE - LD & Modeling - Terrain - Landscape - Feb 9, 2017Note This is a one off crash, that I was not able to reproduce it again. Quickly changing the materials on landscape by painting and undo-ing seems to create this rendering crash ...
Engine Crashes When Previewing ES3_1 With Material Using World Position Offset (Need Custom Stencil)
UE - Platform - Mobile - Feb 15, 2017This crash will only occur when this criteria is met.You have enabled custom depth with stencils in the project settingsA mesh in the scene is rendering to custom depth with a stencil value of 1The ...