I too am happy with it, the amount of active plugins I now have are nearly three times what was in 4.0 Pro. Of course there is now a Studio Library folder that lives on my desktop which appeared when 4.5 was installed. What it is for is something I have not figured out, and I have opened it several times to see if anything has been placed in it yet. It remains empty even now, and I have had 4.5 for going on a month now. The reason I have not deleted the folder is because I don't know what it might do to the software. Anybody else have this type of thing? Would it be okay to get rid of it? These are things I wish to know.