Tighter Regulations Leave Less Room for Error When Computing and Disclosing How Much Mortgages Cost.  John Adams at American Banker reports that Ernst Publishing, not related to the accounting company, sells technology and closing cost data to mortgage market players. Its clients include nine of the largest ten originators and servicers and the largest five title insurance companies.  And it has now received a U.S. patent for its recording fee and tax calculator, called “System and Method for Generating and Tracking Field Values of Mortgage Forms.” Read the whole thing here. More: