Classic pen model havent tried my grip pen yet (will when i have more time) i was using it a mere 15 seconds for drawing before clicking off to a youtube video. when the video ended the tablet would not SEE the pen i was using. My cursor disappeared like it would when the pen wasnt near the tablet and i couldnt do anything with the pen at all.

Computers & Internet - Wacom - Intuos PTH651 Pro Pen and Touch Medium