Unreal Engine Issues

QAGame Crashes on launch on iphone 6 (iOS 8)

this crash was encountered during the mobile compat for 4.15. So far, just this device has been affected. ...

Crash on bake pose when skeleton contains a virtual bone

When a skeleton contains a virtual bone, performing Bake Pose can crash the editor. ...

Python commandlet crashes when spawning actors in a level

Using the python commandlet to spawn actors within a Map and then saving it causes a crash in the commandline. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286),  4.23 (CL - 6338849) ...

RayTracingGeometry.UpdateRHI(); crashes at checkf BuildParams.IsEmpty()

When custom RayTracingGeometry is created, a crash is triggered by an assert at: Engine\Source\Runtime\Engine\Private\Rendering\RayTracingGeometryManager.cpp line 252  "Unexpected entries in BuildP ...

User project crashes after changing struct

DataValidation System Implemented in EditorUtilityBlueprint Subsystem Crash

Implementing data validation via an Editor Utility Blueprint works fine in the editor, but when run via the commandlet, the blueprint won't load the editor utility subsystems (i.e. Static Mesh Edito ...

Crash when selecting "show" > "uncompressed animation" in Persona

From this UDN: https://udn.unrealengine.com/questions/301289/crash-in-persona-debug-display.html Proposed solution: In UDebugSkelMeshComponent::GenSpaceBases() before PerformAnimationEvaluation() ...

Crash when modifying InstancedStaticMesh transform in Blueprint Editor

InstancedStaticMesh component element mismatch between in-level and BP editor can cause crash when modifying transform in BP editor. This can happen when a user modified transform in-level actor's I ...

Animation insights crash with linked anim graphs

From this UDN: https://udn.unrealengine.com/questions/601647/animation-insights-crash.html Looks like we need to cache the function index in FAnimNode_LinkedAnimGraph::DynamicLink and apply the sa ...

Static regex patterns can cause crashes on shutdown

The current lifetime management of regex patterns means that we can attempt to destroy them after ICU has been shutdown. We should change these to follow the same pattern as break-iterators, and exp ...