This map consists of 2 bsp brushes and a single light. I’ve simplified it down from where it was taken. I get this issue until I move it in X or Y. Moving it in Z doesn’t affect the error. I don’t actually see any issues. Its just annoying.
Hi awilliams1701,
You’re right about it throwing the error with overlapping UVs until you move it in the xy. It only needs to be minutely adjusted as well to not throw the error.
It’s an annoying error but from the looks of it it is not causing any issues with the lightmaps that are being baked.
Alternatively, you can get rid of the error by converting the mesh to a static mesh for the better results as well. You can take a look at this guide to do so if you’re not familiar with the process: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
To convert the BSP you only need to select the additive and subtractive brush > Details Panel > convert to static mesh > save as name.
I’m familiar with converting to static meshes. I’m not ready to convert that area into a mesh just yet. For now I made a minor adjustment that is virtually indistinguishable from the original and the error is gone.
I had another case where it involves the placement of 3 BSPs. Two of them were used in a decorative object. I moved the whole decorative object to the origin and then convert it into a static mesh. Now that error is gone as well. Again in this case lightmaps were not having issues. However my first attempt to convert it into a static mesh ended up with the problem having a specific error instead of it being listed as Moving it to the origin before conversion solved the issue.
In both cases it took hours to track down the precise issue since there is no reference to the BSPs. Either this error shouldn’t be generated on BSPs or you should have it give me a name so its easier to track down. I would say worst case scenario, you should identify the BSPs in question.