Does it come up with a message when you try to launch it?
No, nothing and I noticed when I looked at it again only half of the game was being downloaded, but this was quite awhile after I had downloaded it. This is the first time this has happened for any download I've done all the previous versions were fine.
So I just downloaded it again and it says its done downloading but only half of the file is downloaded 1.5-1.7gb of 3.5gb, no idea if it's my end that's causing problems or if it's itch.