Apple Wireless Keyboard "logic pro 9" Questions

...Logic Pro 9 to recognize the Privia. I plug it into my Apple Pro Book, directly thru the USB, LOgic recognizes my Akai MPK 61, and my M-Audio fastrack pro, but not the Privia. Very frustrated! visit ...

logic pro 9 and middle of using my keyboard stops working and have to shut the computer off and on it it works. anybody can tell why does it happen? Does the keyboard need charging? If you can give me