Question
installation of a single user, windows, MathCad 14.0 from the CD Disk with Date Code: M020
I'm installing a single user, windows, MathCad 14.0 from the CD Disk with Date Code: M020. Since this was an upgrade from a previous version, the installation is asking for the "old serial number," which I don't have. I contacted PTC customer support, and they kindly generated and sent me a License Pack file. Where and how to use this file?

