Just run pbsetup and update your punkbuster to the new version....

For the people who don't know how to install or update.

01. Go to this link and download the PB: http://www.punkbuster.com/index.php?page=pbsetup.php [punkbuster.com]
02. Run it's Installation and it will open you a window.
03. If you game is not there... click "ADD GAME" and choose your game and click UPDATE.


Additional, if you has the "punkbstrA is missing" error, go to your battlefiied 4 folder and reinstall the pbsvc.exe