Hi,

the black rendered squares seem to be "atmosphere dependent".

If someone has owned the TerraPak you can test it without changing anything in the scene:

Create a new scene and choose "Standard and fast" from the TerraPak atmospheres.

Add a standard fractal terrain to the scene and render in final quality. I end up with a terrain which has some black squares:

Now change the Atmosphere to "Clear day spectral" from TerraPak and move the sun a bit arround, that the terrain will be "lightened".

This one renders fine.

Ralf

 

Cheers

Ralf