[Qt error] QtMobility is not installed
 

I attempt to run QtMobility example (qmlcontacts example in detail), but it threw errors:
mesg: ttyname: Invalid argument
qrc:/contacts.qml:42:1: module "QtMobility.contacts" is not installed
http://i1103.photobucket.com/albums/...e/errorQml.gif
Help me to explain what i wrong and how i fix it :confused:

Re: [Qt error] QtMobility is not installed
 

May this help :
http://bugreports.qt.nokia.com/browse/QTMOBILITY-1633


can you suggest some qml projects demo that use this API