It's seems that you have awn-core-applets-bzr which is incompatible with awn packages. Please remove all third-party packages before installing official awn packages. you can do this with those commands :
sudo apt-get remove libawn*
sudo apt-get install avant-window-navigator
It's seems that you have awn-core- applets- bzr which is incompatible with awn packages. Please remove all third-party packages before installing official awn packages. you can do this with those commands : navigator
sudo apt-get remove libawn*
sudo apt-get install avant-window-