Unreal Engine Issues

Crash occurs loading a sublevel containing landscape with ray tracing enabled

In raytracing enabled, When loading a sublevel containing landscape with LoadStreamLevel function following error is shown. Assertion failed: Pair != nullptr [Link Removed] [Line: 584] Licensee re ...

Sequencer crashes when using Transform variable added to Scene component BP

This issue has not occurred in previous versions and seems to occur from 4.27. ...

Crash when attempting to paste a spawnable sequencer binding with a null object template

Crash when enabling dynamic branch on static switches in Post Process Materials

[Link Removed] Some functions to access parameters don't take into account the newly added runtime static switch parameters. It should be straightforward to fix these up: void UMaterialInstance:: ...

[PCG] Delayed PCG Component Unregister causing stale pointer crash

EDITOR: LIVE: CRASH: Reroute nodes can cause a loop that freezes the editor.

Branch Build Label UE4-Main Promoted-CL-2230001 DESCRIPTION: If reroute nodes are used to make a loop, the editor will not catch it and the loop will freeze the editor. ADDITIONAL NOTES: Creatin ...

Cooked game crashes during async loading when the engine also has to load another package

[CrashReport] Mac/Metal Intel compiler crash - UE4Editor-MetalRHI.dylib!CreateMTLRenderPipeline()

Mark S: This is an Intel compiler failure on macOS 10.12.6. Callstack from LogAssertion failed: [File:/Users/build/Build/++UE4+Release-4.18+Compile/Sync/Engine/Source/Runtime/Apple/MetalRHI/Privat ...

Importing a 16x16km landscape at 0.5m resolution crashes Unreal (not enough VRAM)

Assertion failed occurs in VR when walking into water on QA-Waterworks map

Encountered a crash when testing shadows in QA-Waterworks map. I found an issue when walking into the water at the bottom for Example 2A, where it would crash upon entering the water. See screenshot ...