as I have CS4, I have to use "Preset Manager" to import anything (discovered this when I went looking for Layout manager...)
SO: Insert-Webassist-Preset Manager.
choose Product: CSS Sculptor
midnight now shows as an option in the layout list.
Removed both previous imports first.
it now gives me some of the missing design elements. (so removing and re-importing helped)
the screen grab shows what I get - am guessing this is now correct?