Exception when starting

When I try to open my saved config I'm getting this exception:
System.NullReferenceException:
   w Prosa.Log4View.MessageView.MessageCtrl.Clear()
   w Prosa.Log4View.App.Log4ViewController.ClearMessages()
   w Prosa.Log4View.App.Log4ViewController.ClearConfiguration()
   w Prosa.Log4View.App.Log4ViewController.ApplyConfiguration()
   w Prosa.Log4View.App.Log4ViewController.OnUpdateTimerTick(Object sender, EventArgs e)
   w System.Windows.Forms.Timer.OnTick(EventArgs e)
   w System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
   w System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Dear michal,

could you send us your config file? Our mail address is support@prosa.biz

Yours sincerely

Philipp Lauchner
PROSA GmbH  
Development & Support

I solved my problem by manually editing the config and removing all recievers, columns, formats and loggers.
After program finally started I was able to load my original config just fine.