webenginewidgets examples does not build on Windows (second try)

Installed Qt 5.4 and tried to build the webenginewidgets examples. But qmake does not find the webenginewidgets module. Checked Qt Maintainance tools and QtWebEngine is installed..

11:23:01: Running steps for project fancybrowser...
11:23:01: Starting: "C:\Qt\5.4\mingw491_32\bin\qmake.exe" C:\Qt\Examples\Qt-5.4\webenginewidgets\fancybrowser\fancybrowser.pro -r -spec win32-g++ "CONFIG+=debug"
Project ERROR: Unknown module(s) in QT: webenginewidgets
11:23:01: The process "C:\Qt\5.4\mingw491_32\bin\qmake.exe" exited with code 3.
Error while building/deploying project fancybrowser (kit: Desktop Qt 5.4.0 MinGW 32bit)
When executing step "qmake"
11:23:01: Elapsed time: 00:00.