Error during launch of editor/game.. After upgrade from 4.26.1 to 4.27.0

Hello everyone,

after upgrading the engine from 4.26.1 to 4.27.0 (I build from source), the editor crash at launch: 75% 'Verifying ‘NiagaraNodeOp’.

I built the source and the game in ‘Development editor’ configuration. Everything worked perfectly fine with 4.26.1.

You’ll find attached the call stacks.
callstack.txt (11.1 KB)

Below the last call stack lines:

> UE4Editor-Niagara.dll!UEditorEngine::GetEditorSubsystem() Line 3277 C++
UE4Editor-Niagara.dll!UNiagaraMeshRendererProperties::PostInitProperties() Line 204 C++
UE4Editor-CoreUObject.dll!FObjectInitializer::PostConstructInit() Line 2891 C++
UE4Editor-CoreUObject.dll!FObjectInitializer::~FObjectInitializer() Line 2744 C++
UE4Editor-CoreUObject.dll!StaticConstructObject_Internal(const FStaticConstructObjectParameters & Params) Line 3235 C++
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport(int Index) Line 4832 C++

Thanks for your help.


Any update on this? I have the exact same issue.

Thank you.

We have the same issue here. Any update?

Turns out this has been fixed and is scheduled for a 4.27.1 fix.


For future readers, I just installed the 4.27.1 and everything works perfectly.