Mathcad 15 (or maybe 14) reinstall
I want to reinstall my oldish (purchased in 2012) Mathcad 15 to work on some support files for one of my old textbooks. The license file manager tells me that the feature isn't available anymore for the product. I think this may be because I bought it as an upgrade from Mathcad 14. So as an alternative I tried to install my copy of 14, but it too was an upgrade from the previous version and I don't have my installation media for Mathcad 13 anymore. Any suggestions?

