Question
Conversion of MAthCAD 15 to Prime 3.1 on Microsoft Surface
I had a great deal of difficultly loading Mathcad 15 on my surface notebook until it was realized that .NET 3.5 framework was needed and though supported in the Windows 10 O/S was not preloaded.
Having resolved that problem I still have issues with conversion. The error message I get is:

If you have any insight to fix this problem it will be helpful.
A

