Aye, screenshot(s) please. In the interim, have you ran TES4LODgen since adding those distance objects? That's normally needed ...though not invariably so... for them to be seen.
-Decrepit-
I don't think he's referring to VWD objects, just the normal ones. There's no such things as a VWD tree for instance, that's already being handled by the game. You don't need TES4LOD Gen for regular objects, only those added by mods.