Traceback (most recent call last):
  File "/usr/share/avant-window-navigator/applets/slickswitcher/switch.py", line 52, in emitted
    func()
  File "/usr/share/avant-window-navigator/applets/slickswitcher/slickswitcher.py", line 208, in update_icon
    self.icon.update(force)
  File "/usr/share/avant-window-navigator/applets/slickswitcher/drawing.py", line 475, in update
    self.draw_windows()
  File "/usr/share/avant-window-navigator/applets/slickswitcher/drawing.py", line 747, in draw_windows
    windows = switch.get_windows(self.number - 1)
  File "/usr/share/avant-window-navigator/applets/slickswitcher/switch.py", line 170, in get_windows
    current_row = int((current_workspace-1) / float(num_columns)) + 1
ZeroDivisionError: float division