Difficulty downloading Mathcad add-ons
Lately I've been playing around with addons of various software products to see if they could help with integrating reoccurring design tasks across software products that do calculations, technical drawing, and finite element modelling, and building information management (BIM)
Looking at the webpage https://support.ptc.com/support/mathcad_downloads.htm there are links for a number of addons. In particular I'm interested in the 3rd, 4th, and 8th items labelled "PTC Mathcad Add-in for Microsoft Excel", "PTC Matchcad/AutoCad Integration", and "PTC Mathcad/Revit Integration". When I click on any of those links, I get a "Document Not Found" page. The instructions it gives are not helpful:
"Please try one of the following methods to locate your document:
- Click on your browser's BACK button to return to your previous page.
- Select a section from the top navigation bar.
- Use the search tool located at the top right of this page."
My questions are:
How are those add-ons accessed by anybody?
Or, is there some other work around that I'm missing?

