Strategy 'Blabla' could not be deserialized: There is an error in XML doc (1, 4762)

[adamus]

I have added a parameter to my strategy and NinjaTrader doesn't like it. It gives me the error "Strategy 'Blabla' could not be deserialized: There is an error in XML doc (1, 4762)"

The parameter is based on an enum like this:

        public enum LogOutput 
        {
            FILE,
            SCREEN,
            NONE
        }

        [Description("File/screen/none")]
        [GridCategory("Parameters")]
        public LogOutput Logging
        {
            get { return logging; }
            set { logging = value; }
        }

If I take out the parameter declaration, everything compiles fine.

I have another enum-based parameter which doesn't present any problems (below). What is wrong with this new one?

        public enum TradingEnabled
        {
            L,
            S,
            LS
        }

        [Description("long/short/both")]
        [GridCategory("Parameters")]
        public TradingEnabled Direction
        {
            get { return direction; }
            set { direction = value; }
        }

Thanks

[NinjaTrader_RyanM1]

Hi adamus,

It works OK here. Can save in workspaces / templates with no issue. How is your private LogOuput logging declared?

[adamus]

Hi Ryan,

it's declared like this:

        private LogOutput logging = LogOutput.SCREEN;
        private TradingEnabled direction = TradingEnabled.LS;

Sorry but what do you mean by "can save in workspace/templates"? I have this in a strategy in the normal place where all my strategies are and I just hit 'compile' every time, normally.

[NinjaTrader_RyanM1]

Serialization issues happen when saving to XML files via workspace or templates.

There is no issue with the code - running it fine here. I suggest recreating a script with only this to isolate from other parts you have.

If you are still running into issues, please attach this file with everything else stripped out.

[adamus]

OK I recreated the script with a new name and the problem resolved itself.

Thanks for the help.

[Baruch]

Hi,
Today I got the same error. I even received an email alert from NT:
NinjaTrader Log Alert:Strategy 'NinjaTrader.Strategy.ZZDC' could not be deserialized: There is an error in XML document (1, 12835).

The solution for me was also to rename the strategy and recompile.
Still it is a bug!

Baruch

[NinjaTrader_RyanM1]

Thank you for the report, Baruch. Can you please submit the workspace xml and strategy file to [email protected] Attn: RyanM. We will try to reproduce here.

[Baruch]

Hi Rayn,
I sent it.

Baruch

[adamus]

Has there been any work on this issue?

I have just run into it again. This time it is particularly annoying because the work-around (to rename the strategy) is not an option that's available. It must be what it is - a word that means something.

Is there any other work-around?

[NinjaTrader_RyanM1]

adamus,

Is there any improvement if you move the enum declaration outside the ninjatrader namespace? Place it according to this sample:

http://www.ninjatrader.com/support/forum/showthread.php?t=3420

[adamus]

Ryan

I played around some more trying to work out exactly what it was and it turns out that it was the variable and property called "logging" and "Logging". I changed that to another word and it compiled. It must be something to do with keywords.