Qt creator cannot find some examples

WHAT I DID:
Press Ctrl+1
Click [Examples]
Click the "Animation: Easing Example"
or "Animation: Basics Example"
or "Animation: Behaviour Example"
or "Animation: States Example"
or "Anomaly"
or "Fancybrowser"
or "QGraphicsGridLayout"
or "QGraphicsLinearLayout"
or "QXMLStream Bookmarks"
(I'm sure there are more....)

WHAT I GOT:
"The page could not be found!

Error loading: qthelp:////........."