Can someone who maybe had experienced this problem advise as to how to remedy it? I contacted both Interactive Brokers and QuoteTracker, but they each tell me to contact the other because the problem is on the other's end. I tried to buy the Nasdaq NQ today via Interactive Brokers using the QuoteTracker software. However, my order was immediately rejected. On QuoteTracker's trade log, the following message was displayed: "IB Ord #4 Err #201: Order rejected - reason:No clearing rule found" Appreciate all help. Thanks.