Tablet Trouble

I've finally gotten some time off, so I decided I'd try and finish some requested manga panels. I go into my program, get everything ready, and start coloring... nothing happens. After a few moments, I figure out that the tablet is only drawing when I tap... so I restart my computer. After getting all my junk back together, I try again. Same issue. The tablet won't draw, it only works by tapping.

I've tried resetting the tablet preferences. I've tried restarting, I've tried unplugging and replugging the tablet. I read the manual online... I'm sick and tired of this. Does anyone who has a Wacom Bamboo Pen Tablet know what's wrong?