I just bought new Wacom Intuos4 Pen grip, since the old one broken (the one I got when I first time bought wacom tablet).
The weird thing is, when I used it, the tablet recognize the pressure (the LED lights brightens, just like how it suppose to be), but the cursor simply is not moving at all.
I already uninstall and reinstall the Wacom CD several times, restart and shut down my computer also.
But still the same thing happening.
My tablet type is PTK640, and the new pen I got is KP501E2, DTK model. And I use Macbook Pro.