I'm using WintoolKit 1.5.4.4 working on a Win7Pro SP1 image and found that the "allow 3rd party theme" tweak doens't work. When testing in VM, loading a 3rd party theme only changes the window color, sound, and cursor. Theme itself won't apply.
Tried to only integrated some updates and no other modification and tweaks (except the 3rd party theme tweak of course) but still no luck.
It used to be working (well, a very old version though, the ISO I used to install my current OS was built in Dec, 2012 which 3rd party theme works fine).
