I was finally able to get the CK to run in a somewhat stable fashion. (Yay.)
However, I have a bit of an issue still. I'm trying to landscape an area and I need to remove the grass. I thought that grass was automatically placed based on texture. However, when I paint over the grass with a new texture, (one that I know lacks grass.) the grass remains. My other question is about cliffs. They don't seem to be morph-able are they statics ore something? How can I alter one?

I can't find anything in the wiki on this. No one knows?

Try toggling grass on and off and refreshing the quad to see if that updates where grass should and shouldn't be.

And since Fallout 3 Bethesda have mainly used static meshes for their mountains and cliffs. The ground is still increased and formed to the shape of a mountain, just the cliffs and peaks are made using statics instead. You can scale them, rotate them, move them or replace them.

Thanks for the info. I'll try that when I get a chance.

I'm having this issue as well.

After teraforming some landscape (in this case, a small hill), the grass stayed behind. I used a texture that wasn't suppose to have grass generated within (such as LPineForrest02NoGrass) but the grass stayed the same. I tried toggling grass on and off, reloading the cell and even closing the CK completely and reloading... the grass is stlll there.

Le sigh.... I'm begining to miss the old CS to a small extent because I didn't have this issue with Oblivion.

Hopefully someone smarter than me can answer this riddle, because I'm at my wits-end.