Building light on generated mesh components in the construction script

Development Rendering
1

Hi,

So I add static meshes via construction script to a blueprint.
The lightmap just builds fine:

92914-1.png
92914-1.png1168×735 503 KB

But when I reopen the map I get the warning

LogStaticMesh:Warning: Cached
component instance data transform did
not match! Discarding cached lighting
data which will cause lighting to be
unbuilt.

and the object has no lightmap applied anymore.

92915-1.jpg
92915-1.jpg1060×688 188 KB

(The warnings here refer to another object but yeah it’s the same problem)

Does anyone know a workaround for this problem? (Except handplacing the assets ofc… )

Thanks and regards,

Andy

2

i’m currently getting this problem too. it seems like a serious issue that’s been totally ignored. sigh…

3

Hi, I currently have a very similar problem:

https://answers.unrealengine.com/questions/468959/invalidated-lightmaps-without-reason.html

without answers too :frowning:

4

Hi Andy,

IIRC this has already been resolved in 4.13. You can check this for yourself in the 4.13 previews that are currently available in the Epic Games Launcher.

-Tim