Please advise if Electcad 6.6 is upgrade and available on Cadian 2010/2011 platform is available, tried and proven. My original version ( August 2008) has never worked even after reinstallation by remote assistnace from Cadian. Availablity, upgrade and cost? Upgrade Electcad 6.6 to latest? Upgrade Cadian 2008 to 2010/2011? Yours truly WH Kotze