I have the older version of this, and I'm having a problem with pen pressure. The problem is that it almost never works. I open up a Photoshop document, and get all of the pressure settings configured. I then have to try drawing several times before the pressure will work. Once it starts working, it's fine, until I pick up the stylus. When I pick up the stylus, it stops working until several attempts in which it will work once. I've tried this on two Windows 7 machines and Snow...