Adding an instrument

[IVTrader]

Hi, I'm new to NT and I'm having problem adding an instrument. I would like to add the S&P400 and S&P600. I have no problem entering all the informations in Instrument manager (Ex: S&P400 Instrument Type: index, exchanges: Amex, Yahoo Map: ^MID) but when I select the instrument in Format Data Series to open a chart I get the following error : "You need to select an instrument". Any idea what's wrong ? And by the way I'm using version 6.0.1000.1.

[NinjaTrader_Ray]

In the Instrument Manager, add one of these new instruments to the default Instrument List. You can then remove it if you desire. This step is required in order to initialize the information. Its only required one time. I will add this to out Help Guide. Additional information to add an instrument to a list is located here.

http://www.ninjatrader-support.com/HelpGuideV6/AddRemoveFromList.html

Ray

[IVTrader]

Thank you.