Lighting Needs to be rebuilt everytime I re-open map?

Development World Creation
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1

Hi everyone

I have this very strange problem where UE keeps telling me my map needs lighting rebuilt whenever I re-open my map, even afer I save my project after lighting finishes rebuilding. I’m not sure what exactly is causing this, all lights in my scene are set to static. I tried deleting Saved/Config inside my project folder, tried unchecking “read-only” from my project folder and all files in it, tried restarting UE but It just keeps happening no matter what. my map is clean and uses only static meshes so far so no Blueprints or anything making changes to it during gameplay

EDIT: Solved by using Grouped Static Meshes instead of BP prefabs

2

Set them to movable. I don’t think Lumen works with static lights, I don’t know much about lighting interiors yet. Once set to movable then I don’t think it builds lights anymore.
Here is a Reddit post helped me when struggling with getting my open world started.

3

Hey, Thanks for answering. but I’m using UE4.27, I don’t think this solution works for the version I’m using.