This works for v0.8 of the mod.
Install "Beautiful Skyrim HD - Clutter and Furniture" MANUALLY.
-From textures/clutter in archive, SELECT ONLY those folders:
-Put them in your Skyrim Data/textures/clutter folder.
*These are, imho, the only texture files actually worth installing from this mod, according also to the other mods featured in STEP that already address many of the remaining textures.