techouse@Mk2:~$ awn-manager
Traceback (most recent call last):
  File "/usr/bin/awn-manager", line 182, in ?
    awnmanager = AwnManager()
  File "/usr/bin/awn-manager", line 93, in __init__
    self.prefManager = awnPreferences(self.wTree)
  File "/usr/share/avant-window-navigator/awn-manager/awnPreferences.py", line 97, in __init__
    self.setup_chooser(defs.APP, defs.ACTIVE_PNG, self.wTree.get_widget("activefilechooser"))
  File "/usr/share/avant-window-navigator/awn-manager/awnPreferences.py", line 192, in setup_chooser
    raise "\nKey: [%s]%s isn't set.\nRestarting AWN usually solves this issue\n" % (group, key)

Key: [app]active_png isn't set.
Restarting AWN usually solves this issue

techouse@Mk2:~$