Hi folks,
I just started working with Unreal and came across a problem with building my lighting in 5.5. It keeps failing and additionally gives me map check errors. Even when I create an absolutely basic scene / objects. (see screenshot)
I read something about disabling VPN connections in previous versions but that didn’t help.
Working on macOS Sonoma 14.6.1.
Any ideas?
What are the errors? ( in the message log )
Hi! I think I might be having the same problem. I’ve been trying to troubleshoot it since the full release yesterday, but started encountering it during the Preview.
I’m in Unreal 5.5 and when I try to build the lighting it almost immediately fails. I’ve tried starting over with a new project or just even with the blank default project for Film & Video and I’ve been having the same issue. I’ve been searching for solutions but not finding anything that seemed to help.
The only information I’m getting from Unreal is a Map Check error. It reads:
WorldSettings_1 Maps need lighting rebuilt
I’ve been trying to see if adjusting any of the project settings would help me narrow down the problem, but no luck there.
I still have version 5.3.2 installed and opened a new blank default project for Film & Video and tried building in that and it worked just fine as lighting builds had been working for me with 5.3 and 5.4. So, it seems to be a 5.5 related issue.
I have an M2 Max Mac Studio 96GB Memory running Sequoia 15.1 and Xcode 16.1
Hope this provides a little more context for a related (if not the same) issue. Maybe someone has solved this?
If you are using Lumen then you do not need to build lighting
This reddit post pretty much sums it up.
Either disable lumen or pre computed lighting
Lumen doesn’t play well with pre computed / stationary lights
If you do want to calculate the lighting then Build => Build Lighting only. Make sure the swarm agent can run to calculate pre baked lighting
Also check the mobility of your lights.
