Hello, I am sorry to hear that, I am struggling to understand how you can get "burned" downloading free software direct from the Microsoft web site? If you can please explain so that I can add a knowlege base article of your experiences.
If it helps, here is a link to a page published today by a new user that has happily installed Visual Studio and the Arduino plugin. The publisher has just joined the debug tool beta group so the article covers some extra stuff that you can ignore.
With regard to the print class diagramm: it makes it blindingly obvious that the design for print is somewhat screwed
It's very good to hear that seeing a graphical diagram can also be used to identify coding mistakes. In terms of understanding, it's just an example, maybe my 2nd example in this post is more relevent for experienced users.
I can say that we have good feedback from the people that are actually working with the 2nd example.