Custom themes not working

Whenever I try to use a custom theme downloaded from the likes of DeviantArt, I get this (i.e. horrible big borders and boxes round the minimize etc buttons, and no element of the theme), it's basically the same as the inbuilt Aero Lite theme:


Rather than what it should be (this for example: http://neiio.deviantart.com/art/Metr...on-566828030):


Any ideas on what could be wrong? I've followed the instructions and installed UltraUXPatcher.

What Build of Windows 10 are you using?

10240

Well it should work then. I would ask the Developer at DA about it.

Gary said:

Well it should work then. I would ask the Developer at DA about it.

Yeah that was my first port of call, but he just said he had no idea. Great! It applies to all themes i've tried though so it's not as if it's an issue with just his theme.