Convert strategies built in NinjaTrader version 8.0 to version 8.1.

[northstardaytrading]

Just upgraded to NinjaTrader version 8.1.1.6 64-bit.
Tried to load a strategy that I built in in NinjaScript 8.0 (1 of about 30 that I have developed) and it will not import due to being built from an older, incompatible version.

What is the fix for this?
I seriously hope I do not need to rebuild all of these.

Also, where are the Custom built Strategies now being saved? It used to be (install directory)\NinjaTrader 8\bin\custom\strategies

Thanks.

[QuantKey_Bruce]

The message about "older, incompatible version" is for 7.0 indicators and strategies, not 8.0.

[NinjaTrader_BrandonH]

Hello northstardaytrading,

Thanks for your post.

QuantKey_Bruce is correct. The error message about a NinjaScript being unable to import because it is an older, incompatible version occurs when you try to import a NinjaTrader 7 NinjaScript into NinjaTrader 8.

Note that there are no code-breaking changes between NinjaTrader 8.0 and NinjaTrader 8.1 so any script created on NinjaTrader 8.0 should import onto NinjaTrader 8.1.

NinjaScript strategy files are located in the Documents\NinjaTrader 8\bin\Custom\Strategies folder.

You could clarify if the script was created for NinjaTrader 7 by opening the .zip file of the NinjaScript, opening the info.xml file in a text editor, and noting the line that says 'Version'.

If the script was created for NinjaTrader 7, you must convert the script to be compatible with NinjaTrader 8. Or, reach out to the developer of the NinjaScript to see if they have a NinjaTrader 8 compatible script.

Unfortunately, due to the code-breaking changes to the structure of NinjaScripts as well as changes to the NinjaScript properties and methods, no scripts created for NinjaTrader 7 will import into NinjaTrader 8.

If this is a script you have created that you would like to convert to NinjaTrader 8, my advice is to start by creating as much of the script as possible in NinjaTrader 8 using the Strategy Builder (or Strategy Wizard). This will create the framework of the indicator or strategy which has large changes from NinjaTrader 7 to NinjaTrader 8.

Then copy all code from the NinjaTrader 7 scripts OnBarUpdate to the OnBarUpdate of the NinjaTrader 8 script. This will introduce errors that will need to be resolved.

Below I am including a link to a list of the code-breaking changes from NinjaTrader 7 to NinjaTrader 8.
http://ninjatrader.com/support/helpG...ng_changes.htm

The help guide will be the best way to see how things have changed from NinjaTrader 7 to NinjaTrader 8.

When first starting to port scripts, you should open the NinjaTrader 7 help guide and the NinjaTrader 8 help guide to the same sections so that you could compare. The majority of code supported by NinjaTrader is included in the help guides.

Below is a link to a forum post with helpful information about getting started with NinjaScript.
https://ninjatrader.com/support/foru...040#post786040