I had Stradivari violin with Kontakt 6 full version. I installed Kontakt 7 player and lost the Stradivari violin. I read the error message info in your product support and proceeded to download from the list ( I have a 10:15:7 Mac) only to get a "404 URL not found on this server" message. The project I was working on before Christmas heavily featured this instrument (which I no longer have!), please can you assist?