Unreal Engine Issues

Adding "_API" specifier to FMovieSceneTrackEditor results in linker errors

Unable to add API specifier to FMovieSceneTrackEditor, results in compile errors (pasted in the callstack field) ...

App crashes on launch when packaged for Vulkan with Scalable 2D/3D

No Vulkan SDK was installed Crashed on a Nexus 6P ...

[CrashReport] UE4Editor_Renderer!FSceneRenderTargets::GetGBufferResourcesUniformBuffer() [scenerendertargets.h:408]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: IsValidRef(GBuff ...

Crash to desktop after creating Level Sequence with Widget Blueprint

Newly created Level Sequence assets cant be opened when they have been created via Editor Blueprint Widget. They are created successfully through a button click for instance, but when you try to ope ...

Crash when force deleting blueprints that reference each other

Editor crashes when trying to force delete assets that reference each other. Blueprint 'A' contains an Actor Component of Blueprint 'B'. Crash will occur when trying to force delete both 'A' and 'B' ...

FPackedRGBA16N is divide by 32768 twice in NEON/FPU

Android app will get crashed if it disable HDR and run with Vulkan API

The backtrace is： F/DEBUG   : backtrace: F/DEBUG   :     #00 pc 00070e22  /vendor/lib/hw/vulkan.msm8994.so (A4xCommandBuffer::HwProcessWorkload(QglWorkload*)+585) F/DEBUG   :     #01 pc 0004758d  / ...

[CrashReport] Assertion on in UMaterialInterface::InitDefaultMaterials()

This is a common Mac crash occurring in the 4.16.1 release. I have not found any evidence of it occurring on Windows. The callstack closely matches [Link Removed], which was briefly experienced by ...

Editor crashes when a hot reload is performed on a project that contains a custom User Defined Struct code class

Adding a custom User Defined Struct code class to a project causes the Editor to crash whenever a hot reload is performed on that project. Removing the custom User Defined Struct class allows hot re ...

EQS Generators named "NewBlueprint" cause errors and crash

Naming an EnvQueryGenerator_BlueprintBase derived BP "NewBlueprint" and deleting it causes new custom generators to not appear in the EQS. This can also lead to a crash when searching for the new ge ...