I've been getting this too after DLing and setting everything up and I'm not sure why, I can't get past the log-in screen.
One thing I did note was when I click on my GAMES folder, it says it's read-only, so I uncheck that box, click apply, close the window, but then when I re-open properties, it's checked as read-only again. I don't know why that won't let me change it. Is that my problem here?