Unable to connect to Pc

[emabonacchi]

With any reason, today my Cytech stop working.
Trying to solve the problem, i have connected pc and this is the error message:



Unhandled exception:
System.NullReferenceException: Riferimento a un oggetto non impostato su un\'istanza di oggetto.
   in Comfort.Form1.ScanForUcms(Configuration configuration)
   in Comfort.Form1.ScanForAllModules(Configuration configuration)
   in Comfort.Form1.uploadComfortPCToolStripMenuItem_Click(Object sender, EventArgs e)
   in System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   in System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
   in System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   in System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   in System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
   in System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
   in System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   in System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
   in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   in System.Windows.Forms.Control.WndProc(Message& m)
   in System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   in System.Windows.Forms.ToolStrip.WndProc(Message& m)
   in System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
   in System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   in System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)




Some suggestion?