installation mystery

Hi, my Studio 19 used to work perfectly until 2 days ago when it suddenly froze up. I erased it from my system, and downloaded a new copy, but it sends highly unusual error messages. Also, it wants to load the product package from the MyMusic folder, which is a mystery as - as I said before - this is a brand new copy. 

When I click the project package, it returns a very long error message with a grey background.

I did the standard trick of renaming the 15.0.0.0. folder to old_15.0.0.0., but nothing happened.

My local provider also threw in the towel.

Pls help. Thanks     Andras