tes4lod doesn't actually generate the land part of the LOD, you have to do that in the CS: http://cs.elderscrolls.com/constwiki/index.php/Landscape_LOD_Tutorial. Tes4lod refreshes the position of _far objects on the LOD, such as trees, which is useful if you have a mod that, say, turns the white gold tower into the statue of liberty, so you can see it from afar as the statue of liberty. However, if you have a mod that replaces the imperial city with a mountain, running tes4lod will
not make that change visible if there is no LOD with the mod. So although I don't know why the CS is crashing, but you can get the CS to make your mountains visible from afar. How do you think Bethesda did it in oblivion?
:hubbahubba: