How to use Add

Hey,
can someone tell me how to use AddPass? When i add more then 5 textures in the Terrain Script it turns pink.
PLeas ehelp me :3

The terrain drawer runs it all it automatically, fresh off the download. It groups the first 4 textures and draws the ground with the FirstPass shader, then takes every other group of 4 and draws with AddPass.

It only matters if you’re (or some Terrain package you’ve gotten is) changing the terrain shaders. For example, you modify it to sharpen terrain gradients. When it suddenly stops working on the 5th texture. Ah, yes – you have to make the same changes in AddPass.