Mac make install fails for qmediaplayer demo error in pro file

output for mac make install ....

cp -f /Users/aweinric/dev/qt/demos/qtdemo/Info_mac.plist /usr/local/Trolltech/Qt-4.7.0/demos/qtdemo/
cd qmediaplayer/ && make -f Makefile install
rm -f -r "/usr/local/Trolltech/Qt-4.7.0/demos/qmediaplayer/qmediaplayer.app"
cp -f -R "qmediaplayer.app" "/usr/local/Trolltech/Qt-4.7.0/demos/qmediaplayer/qmediaplayer.app"
mkdir: /Users/aweinric/dev/qt/demos/qmediaplayer/qmediaplayer.pro: File exists
make[2]: *** [install_sources] Error 1
make[1]: *** [sub-qmediaplayer-install_subtargets] Error 2
make: *** [sub-demos-install_subtargets-ordered] Error 2

problem appears to be in the line below in the .pro file.
sources.path = $$[QT_INSTALL_DEMOS]/qmediaplayer qmediaplayer.pro