Unreal Engine Issues
Unreal Engine Issues
Material Editor Assertion Crash When Collapsing Material Attributes
UE - Rendering Architecture - Materials - Jul 14, 2022Collapsed 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 ...
Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters
UE - Graphics Features - Nanite - Jan 21, 2025The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...
[CrashReport] Linux crash - FMonitoredProcess::Launch()
UE - Platform - Linux - Sep 14, 2017This is an infrequent Linux crash occurring in 4.17.1. Callstack from Log[2017.09.06-15.26.30:028][666]LogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/***/.local/ ...
[CrashReport] UE4Editor-ApplicationCore.dylib!invocation function for block in FMacApplication::DeferEvent()
UE - Platform - Apple - Dec 1, 2017This 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.
UE - Simulation - Physics - Aug 25, 2016Welding 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. ...
Fixing up GoogleVRHMD static analysis warning
UE - Platform - XR - Oct 31, 2016[Line 1585] d:\build++ue4+release-4.14+compile\sync\engine\plugins\runtime\googlevr\googlevrhmd\source\googlevrhmd\private\googlevrhmdrender.cpp(42) : warning C6386: Buffer overrun while ...
Fix InstancedStaticMesh RemoveInstance invalidating indices
UE - Gameplay - Oct 26, 2016When removing instances from an ISMC, indices / indexes returned from AddInstance will be invalidated. This can cause issues for users that want to do custom management of instances. Using something ...
Investigate/Fix incremental component unregister
UE - Gameplay - Mar 11, 2020Streaming a level back in before it finishes streaming out behaves undesirably. When a level is streamed out the actors/components in the level are incrementally unregistered over multiple frames. ...
Fix primitive uniform buffer validation.
UE - Rendering Architecture - RHI - Jul 31, 2020GPUScene primitive validation is currently busted and asserts. It looks like there are two problems: 1) NaN's in the entries can cause comparison issues, so a MemCmp would be better. 2) There's a ...