Barcode Magician version 1.7 is designed to work with version 7.1 and higher of MET/BASE.Barcode Magician version 1.6 was designed to work with versions 7.x of MET/BASE ONLY.Barcode Magician version 1.5 was designed to work with versions 6.x and 7.x of MET/BASE.If you are using an earlier version of MET/BASE, give us a call.