Strategy could not be deserialized

[richp6]

Hi,

I recently upgraded to the latest version of NT 7. I just went to test some strategy modifications by copying my old strategy, renaming it, and changing the public class. It compiled fine. When I went to open a strategy analyzer window, I got the following error:

Strategy 'NinjaTrader.Strategy.MyStrategyDev' could not be deserialized: Object reference not set to an instance of an object.

Is there something else I need to do?

Thanks,

Rich

[NinjaTrader_Matthew]

Hello Rich,

Thank you for your post.

Can you please post the Properties section of your code? I will need to review this to see if I can duplicate the error.

[richp6]

Just this part?

#region Properties
[Description("")]
[GridCategory("Parameters")]
public int Qty
{
get { return qty; }
set { qty = Math.Max(1, value); }
}
#endregion

[NinjaTrader_Bertrand]

Thanks Rich, that part should not give you any issues - have you created parameter templates for this strategy? Has this only occured when working in the SA?

[richp6]

Like I said, I made a file copy of the production version of my strategy. Then I changed the strategy name in the code. It compiles fine, and I seem to only get that error in SA. The strategy still backtests fine in SA though.

[NinjaTrader_JoshP]

richp6,

Without seeing complete code we cannot comment on what might have been missed or not in the renaming process. In the future I suggest you just right click > Save As if you want to create a copy with a different name. This will ensure all necessary changes are propagated through automatically.