I had a similar problem and I was going insane. For me though I was using Adobe Elements 11 and was using Intuos 3. Additionally when I clicked Wacom Tablet Properties it said "THE TABLET DRIVER WAS NOT FOUND". I tried reinstalling the driver and it seemed to work until I restarted and then I was back at square one.
I then stumbled across this link: http://zeico.tumblr.com/post/39457145207/wacom-tablet-driver-not-found -what-do
It basically instructs you to search for services in the search bar, click it, click Wacom Professional Service, restart this service, and viola the world can go back into motion.
I hope this solves your problem like it did mine.