Editor Crash when using landscape splines

Development World Creation
1

Hi, I was hoping someone would be able to help me figure out what is causing my editor to crash when I build lighting. I know that it happens when I have a landscape spline in my scene, but I haven’t been able to find a fix. The crash occurs when lightmap baking completes. It reaches 100%, tries to compile, and then closes itself. Here is the crash report.

Assertion failed: UniformExpressionCache.bUpToDate && UniformExpressionCache.UniformBuffer [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp] [Line: 379]

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Renderer
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll

2

Any solution to this?

3

I’d recommend searching here to see if it is already a known issue: https://issues.unrealengine.com/

And if not, and you know the steps to reproduce the problem, report it here: Unreal Engine Community

Thanks

4

This is happening for me whenever I save.