Unreal Engine Issues

Static Mesh cooking: Bad mesh description should not crash the cooker

FStaticMeshRenderData::Cache has the assertion: checkf(Owner->IsMeshDescriptionValid(0), TEXT("Bad MeshDescription on %s"), *GetPathNameSafe(Owner)); This assertion can be triggered by data erro ...

[CrashReport] Crash on Mac due to uncaught exception 'NSRangeException' - NSCFConstantString characterAtIndex

This is a common and longstanding community crash on Mac. Users have not provided descriptions when they crash, so additional information is currently not available. A log file is attached. Callsta ...

Slate Widget fails to compile once added to a new project

Slate Widget fails to compile when you add it to a new project. Expected as a user that anything in that default list should be able to be added and compile fine without making any changes. Compil ...

Ensure condition failed : SkeletalMeshLocation module on scaled SkeletalMesh

The message in ensure is below LogOutputDevice: Error: === Handled ensure: === LogOutputDevice: Error: Ensure condition failed: (FMath::Abs(1.f - M.GetScaledAxis(EAxis::X).SizeSquared()) <= (1.e-4 ...

Crash in MaterialInstance when deleting a layer

Repro from licensee here - [Link Removed] ...

Crash in Blueprint when clicking on Component variable name that remains after Component was deleted

This is a common crash in 4.16 and trending in the 4.17 previews. It can be reproduced by clicking on the name of a variable that remains listed in a Blueprint after the associated component has al ...

FPackedRGBA16N is divide by 32768 twice in NEON/FPU

AttachRootComponentToActor being used over a network can cause an Ensure (previously an Assertion) to be triggered.

This is a continuation of [Link Removed]. The previous ticket changed an Assertion to an Ensure in order to stop a crash from occurring, and stated that a more complete fix would be coming in 4.10. ...

[CrashReport] UE4Editor_MovieSceneTools!FPropertySection::GetPropertyValue<float>() [propertysection.h:70]

This is a somewhat common crash in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 58 /** Gets the current value of the property w ...

[CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()

This is a common crash affecting Mac users in the 4.16 release. Mark.S: "one of the visualisation shaders is setting up bogus render state" Callstack from LogLogActorFactory: Actor Factory create ...