Import symbol already in list causes exception

[Pete S]

The problem I reported in this thread:

http://www.ninjatrader-support.com/vb/showthread.php?t=5916

did not get fixed in the production release.


2008-04-20 10:51:20:171 in OnUnhandledThreadException
2008-04-20 10:51:20:359 ********* exception trapped *********
2008-04-20 10:51:20:359 Item has already been added. Key in dictionary: '9d75ee107cb84027b7ea38c7a3823d53' Key being added: '9d75ee107cb84027b7ea38c7a3823d53'
2008-04-20 10:51:20:359 at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
at System.Collections.Hashtable.Add(Object key, Object value)
at Wilson.ORMapper.ObjectSet.Add(Object objectKey, Object entityObject)
at Wilson.ORMapper.ObjectList.Add(Object entityObject)
at NinjaTrader.Cbi.StockImport.OnOk(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(MouseEventAr gs 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.O nMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[NinjaTrader_Dierk]

Could you please provide me a step by step guide on how to reproduce? Thanks