Though you have updated, it appears that the updater still thinks that you have not.
The first thing that I would do is follow the suggestion in the message. An alternative would be to close PrPro, and open Bridge, then choose Help>Update from there. Not sure why updating from Bridge seems to do things better, but it does for many.
This should do one of two things: actually do the update (maybe it only was applied partially? and clear the updater notification. I have had similar with Acrobat Pro, where it took three attempts to get the update to both complete and then to clear the notification messages.
Now, when I go to update from Adobe, I first shut off my AV, pop-up blockers and spysweeper programs. I trust Adobe.com, so do not want anything getting in the way. One more thing to do, prior to updating is to make sure that you have the very latest Adobe Flash Player installed. More and more, Adobe's installers rely on Flash Player.
That is all that I can think of now, other than Good Luck!