NT7B6 add new stock exception error

[nailz420]

NT7B6 throws an error when trying to add a custom stock using the instrument manager. Instrument manager->click new->Master instrument=TEST->Misc tab->Symbol Map->Simulator=TEST->click OK => error message. However I was able to add a custom future without any errors.

2010-01-04 13:30:22:645 in OnUnhandledThreadException
2010-01-04 13:30:22:645 ********* exception trapped *********
2010-01-04 13:30:22:645 Object reference not set to an instance of an object.
2010-01-04 13:30:22:645    at NinjaTrader.Gui.InstrumentManager.btnNew_Click(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Pentium D, 2 Gb RAM, XP Pro SP3 32bit

[NinjaTrader_Dierk]

Unfortunately I could not reproduce the issue here.

[nailz420]

I was able to insert and delete the stock after I disconnected from the data feed (zen-fire). I got the exception after I reconnected and tried adding the same stock again.

[NinjaTrader_Dierk]

I could reproduce. Thanks for clarification. This is a bug which will be resolved with next update.