Unable to create instance-error log message

[J_o_s]

This problem is solved. Sorry for any inconvenience caused.

With each complication of NinjaScript code, I receive the following error message in the NinjaTrader log:

Unable to create instance of 'NinjaTrader.Strategy.FixedPercent2'. Most likely there is no default constructor defined, or the default constructor does not work correctly: Constructor for type NinjaTrader.Strategy.FixedPercent2 is not found.

The whole code section for these classes is:

class MoneyManagement2 : Strategy
{
    protected double accountSize;

    public MoneyManagement2(double accountSize)
    {
        this.accountSize = accountSize;
    }
}

class FixedPercent2 : MoneyManagement2
{
    private float fixedPercentage;

    public FixedPercent2(double accountSize, float fixedPercentage)
        : base(accountSize)
    {
        this.fixedPercentage = fixedPercentage;
    }
} 

Some other points:

• There are no errors in the NinjaScript editor after compiling,
• There are no errors or warnings in Visual Studio,
• As far as I know the above code example is correct,
• Creating an instance of these classes works and they can be used without errors.
• I'm running the latest stable version (7.0.1000.2)

Am I such an C# dummy or is NinjaTrader displaying some bug?

Regards,

Edit: Well, it turns out I'm such a dummy. The following code doesn't generate any errors in the NinjaTrader log, though I'm wondering why the default constructor isn't provided by the compiler:

class MoneyManagement2 : Strategy
{
    protected double accountSize;

    public MoneyManagement2(double accountSize)
    {
        this.accountSize = accountSize;
    }

    public MoneyManagement2() : base()
    {

    }
}

class FixedPercent2 : MoneyManagement2
{
    private float fixedPercentage;

    public FixedPercent2(double accountSize, float fixedPercentage)
        : base(accountSize)
    {
        this.fixedPercentage = fixedPercentage;
    }

    public FixedPercent2() : base()
    {

    }
} 

[NinjaTrader_Bertrand]

J_o_s, happy to hear you got it working for you, since this is more a C# topic we could unfortunately not provide direct support for it, but I feel this overview can help - http://www.yoda.arachsys.com/csharp/constructors.html

[babypowder]

Unable to create instance of NinjaTrader.Indicator EMA

Hello
I'm also having trouble when applying an EMA indicator to my chart. Please advise

http://screencast.com/t/auAEBob33Q9

[NinjaTrader_PatrickH]

Hello babypowder,

Thank you for your post.

Please send me your log and trace files for today so that I may look into what occurred.

You can do this by going to the Control Center-> Help-> Mail to Support.

Please place 'ATTN: Patrick - 445469' and please reference this thread in the body of the email: http://www.ninjatrader.com/support/f...ad.php?t=38969

I look forward to your response.