Doing this will cause a crash

[cgeorgan]

Hi-

I've been able to consistently reproduce this crash here several times. I've been deleting old saved backtests from my "strategy analyzer" folder (wherever that is, I actually can't seem to find it).

So I choose to "load a backtest result," and I start clicking on old backtests to delete them. After 3-4 deletes, I'll get an exception and a crash. I copied the last time that happened from my trace, and pasted it below.

These old backtests are for strategies that I've removed from my strategy folder. I didn't actually try and load the backtests - just clicked on them and went to hit delete.

I tried this, just to make sure, both while connected to my data provider as well as when I was disconnected. Same result.

[B]2011-03-21 18:00:14:703 ERROR: Unable to restore strategy 'NinjaTrader.Strategy.CRG_Momentum_MultiTimeFrame4a' with ID 'e0ca11ec90894618966bd1f52134f224'. Most likely this strategy no longer is supported by the custom assemblies.
2011-03-21 18:00:14:718 in OnUnhandledThreadException[/B]
2011-03-21 18:00:14:734 ********* exception trapped *********
2011-03-21 18:00:14:734 Mapping: IObjectHelper is missing Strategies_ : NinjaTrader.Strategy.StrategyData
2011-03-21 18:00:14:734    at Wilson.ORMapper.Internals.Instance.SetField(EntityMap entityMap, Object entityObject, String member, Object value, CustomProvider provider)
   at Wilson.ORMapper.Internals.Instance.SetObject(IDataRecord data)
   at Wilson.ORMapper.ObjectReader.Read()
   at Wilson.ORMapper.Internals.Context.GetObjectSet(ObjectReader reader)
   at Wilson.ORMapper.Internals.Context.GetObjectSet(ObjectQuery objectQuery, Boolean firstLevel)
   at Wilson.ORMapper.ObjectSpace.GetObjectSet(ObjectQuery objectQuery)
   at NinjaTrader.Strategy.SaveStrategyForm.DeleteNow(String name, Boolean backTestOnly)
   at NinjaTrader.Strategy.SaveStrategyForm.Delete(String name)
   at NinjaTrader.Strategy.SaveStrategyForm.OnKeyDown(Object sender, KeyEventArgs e)
   at System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
   at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
   at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
   at System.Windows.Forms.Control.WmKeyChar(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ListView.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)
2011-03-21 18:00:25:078 Gui.WorkspaceOptions.ApplicationExit
2011-03-21 18:00:26:531 Gui.Globals.AppExit: deactivating hot keys
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down news timer
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down message timer
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down file type watcher
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down ATI server
2011-03-21 18:00:26:531 Gui.Globals.AppExit: disposing autoTrade component
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down data server
2011-03-21 18:00:26:531 Gui.Globals.AppExit: shutting down SMTP server
2011-03-21 18:00:26:531 Gui.Globals.AppExit: closing connections
2011-03-21 18:00:26:531 Gui.Globals.AppExit: closing replay connection
2011-03-21 18:00:26:531 Server.Client.Close
2011-03-21 18:00:26:531 Cbi.Globals.ApplicationExit
2011-03-21 18:00:26:531 Db.Globals.ApplicationExit
2011-03-21 18:00:26:546 Cbi.License.ApplicationExit
2011-03-21 18:00:26:562 Data.Collective2Adapter.ApplicationExit
2011-03-21 18:00:26:562 Checking backup reminder...
2011-03-21 18:00:26:562 ************************ Session End ************************

[NinjaTrader_RyanM1]

Hi cgeorgan,

Thank you for the report.

These old backtests are for strategies that I've removed from my strategy folder.

To remove strategies from NinjaTrader:
Click Tools > Edit NinjaScript > Strategy > Highlight a strategy and click delete.

If you remove strategies properly, you shouldn't get this error. Can you please confirm if you removed the files from the NT UI or through Windows?