JamesBond007 is correct, but I wish backtesting were the only problem. Trade Architect doesn't offer autotrading; it's only a platform.
Is SD still supported? I checked their site and it is not listed under their trading tools. It can be found in other areas, but seems it is not promoted by the firm. James, you need to type StrategyDesk on Ask Ted (inside Ameritrade site) and it will be a link to SD