How to promote and use ‎QtPropertyBrowser‬ in Qt 5.4?

[patlecat]

I'm trying to integrate the ‪‎QtPropertyBrowser widget‬ from the Qt-Solutions-Archive into my own project under Qt 5.4. Funny thing is that I could build the lib and the Demo.exe and it runs fine too. But once I try to promote a QWidget into a QtPropertyBrowser (in Designer) then I get the following error on compile:
"C:\Development\Qt5\webtooth-extractor\Bin\ui_window.h:35: error: C1083: Cannot open include file: 'qtproperty.h': No such file or directory"

What am I doing wrong here?

https://qt.gitorious.org/qt-solutions

[patlecat]

Maybe it's just my lack of understanding of how to promote/integrate a 3rd widget into my application via Designer...!?