Landscape import error, patchy terrain

When I import a landscape I’m getting this visual error:

Does anyone know how to fix it ?

another problem is that I cannot paint layers on the red area at all :

Hey marcomaryred,

The error message at the top left of your screen is indicating you need to rebuild your scenes lighting. Do this to get rid of the squares you are seeing on your landscape.

Also, how do you have your landscape material set up? The landscape paint function relies on a specific set up for material to allow you to paint on the landscapes surface.

Let me know if these suggestions did not resolve your issue, or if you need further help.

Thanks,

No it wasn’t the lightmap, in the end using .png instead of .raw in my layers fixed the issue. Thank you for your time !