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:

blacksmith
carts
choppingblock

-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.