Unreal Engine Issues

Local binary build fails for iOS platform.

Attempting to create a local binary build of the Engine for the iOS platform using BuildGraph is currently failing. While trying to build UHT for Mac using a remote build, the build fails because it ...

Assert When Saving Over Existing Level With Built Lighting

While saving over an existing map the engine will crash if both maps have baked lighting. ...

Importing Mesh with "Import Animations" enabled crashes editor.

After importing a mesh with "Import Animations" enabled the editor crash's. Importing only the mesh does not crash the engine. Importing animation separately and assigning to Skeletal mesh on import ...

[CrashReport] UE4Editor_UMG!CastChecked<UUserWidget,UObject>

This is an early trending crash in the 4.17 release. This may be a regression as there is no initial evidence of this callstack occurring in 4.16. User DescriptionsJust compiled my widget Source C ...

Lightmass crash after finished building and hitting save

User is reporting that the editor will crash after lightmass has finished building and they click to save the project. ...

Crash in UEditorEngine::CheckForWorldGCLeaks

Error message: Fatal error: [Link Removed] [Line: 1959] /Game/FirstPersonBP/Maps/FirstPersonExampleMap.FirstPersonExampleMap still around trying to load ../../../Engine/Content/Maps/Templates/Templ ...

Crash when Building Lighting on Macs with Lighting Scenarios

A crash occurs when you building lighting with a project using Lighting Scenarios on a Mac. I attempted to reproduce the issue using a new blank project, but was unable to get the crash to occur. T ...

Crash trying to import facial animations

Crash occurs when attempting import Facial Animations in the Facial Animation Import Tool. ...

Crash when importing an Alembic file with Materials if it already exists

MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution

When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...