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I need to convert legacy worksheet into Mathcad Prime 3.0, but the command on the Input/Output toolbar is gray and inaccessible. My company has the Gold support package. What is missing?
You need a full installation of Mathcad 15 (will coexist with Prime) to be able to use the converter. If you buy Prime you get Mathcad 15 for free (the license file will work for MC15 as well). So you get a version to work with (MC15) and one to despair of (P). Be prepared that conversion of legacy sheets will work painless for very basic sheets only.