Bamboo Waccom Tablet Problems

Well it didn't start too long ago, when I bought one from the local Apple store for $104.95 (Cost was $99.95, but I'm adding 5% plus tax) I was excited to use it, but there was only one annoying problem. I'm not getting any lines on any of my artwork.

Instead I keep getting this, this line using my tablet's pen, while having the "brush tool" selected.



And after I lift the pen, the line disappears with that yellow background, and then it switches to "Path Selection tool" automatically.



I can't seem to get a line to practice my lineart. I've tried checking online to see who else has had this problem, but I can't find any wanswers. Does anybody have an answer to this problem? Please?