gnome-do crash

Binary package hint: mono

Gnome-do (with docky ) crashed and the terminal it was launch from produced this output (The application crashed while the user was away):

Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.IO.IOException: Win32 IO returned ERROR_GEN_FAILURE. Path: /proc/acpi/battery/BAT0/state
  at System.IO.FileStream.ReadData (IntPtr handle, System.Byte[] buf, Int32 offset, Int32 count) [0x00000]
  at System.IO.FileStream.ReadInternal (System.Byte[] dest, Int32 offset, Int32 count) [0x00000]
  at System.IO.FileStream.Read (System.Byte[] array, Int32 offset, Int32 count) [0x00000]
  at System.IO.StreamReader.ReadBuffer () [0x00000]
  at System.IO.StreamReader.Peek () [0x00000]
  at System.IO.StreamReader.get_EndOfStream () [0x00000]
  at (wrapper remoting-invoke-with-check) System.IO.StreamReader:get_EndOfStream ()
  at BatteryMonitor.BatteryMonitor.UpdateBattStat () [0x00000]
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000]
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Timeout+TimeoutProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)