[Terry60]

Strange that it does not work. I tested using the same rules you used and it worked for me.

Could you provide a Debug Log which captures an Update Library, and I might spot an issue with paths. I assume these drives are actual local drives and not mapped network drives?

Thanks for trying Karellan,
Yes those are actual physical spinning platters sitting inside the PC, but since I found a much quicker and easier solution to customizing the Home menu items in another Skin thread (which works just the same in Silvo) using Favourites, you can write this one off as solved.
I've decided smart playlists is a bit of a roundabout over-complex method to achieve a result which favourites accomplishes with ease.