xbmc-live upgrade errors

when getting the next error during upgrade:


/var/lib/dpkg/info/xbmc-live.postinst: 165: cannot create /var/lib/polkit-1/localauthority/50-local.d/20-xbmclive.pkla: Directory nonexistent 


dpkg: error processing xbmc-live (--configure): subprocess installed post-installation script returned error exit status 2 


Errors were encountered while processing: xbmc-live E: Sub-process /usr/bin/dpkg returned an error code (1)


remedy:


sudo apt-get purge xbmc-live
sudo apt-get install upower acpi-support uxlaunch
sudo apt-get install xbmc-live