Unreal Engine Issues

Vulkan crash on Android when suspending and resuming app

[CrashReport] UE4Editor_Slate!SMultiBoxWidget::GetCustomizationVisibility() [multibox.cpp:931]

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: Result == FPrope ...

[CrashReport] Mac Metal crash - FSceneRenderer::RenderDistortion()

This is a somewhat common Mac crash occurring since 4.15 and into 4.17.1. Users have not provided any descriptions of their actions when the crash occurred. This specific callstack was previously ...

[CrashReport] Mac/Metal crash - Assertion failed: (PixelShader->Bindings.InOutMask

This is a low frequency but trending crash coming out of 4.18. User DescriptionsAttempting to open a copied/converted from 4.16.3 project on 4.18 preview 4. Problem arose after preview 3. Was able ...

Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

Package fails for android if company name begins with a number

If the company name has a number at the beginning of it when packaging for android it returns a series of errors and does not allow the project to be built. The error that is being shown in the outp ...

[CrashReport] Mac crash - UE4Editor-Slate.dylib!PrepassWindowAndChildren(TSharedRef<SWindow, (ESPMode)0>)

This Mac crash originally occurred in 4.15 around March 2017, then decreased in frequency during 4.16 and 4.17. It may be starting to trend again in 4.18. There is one record of this occurring in 4 ...

Project does not cook with actors containing ModularSynth component

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...

CLONE - Project does not cook with actors containing ModularSynth component

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...

Ensure when using ellipsis overflow method with very small Slate text boxes

The Ellipsis overflow method on text widgets can cause an ensure to trip as a result of a render batch being sent with no indices. We could guard against this in SlateRHIRenderingPolicy by checking ...