User update needed after updating to Mac OS X Yosemite A couple of days ago I updated my Macbook Pro to OS X Yosemite, the update was fine and everything seemed to be working. However since this whenever I had shut down then later logged back in or restarted my macbook I have encountered the screen pictured below. 

My user profile has no picture and says [update needed] rather than my name. I can still select it, enter my password and log on. An update complete and then everything is ok. The same thing happens every time I go to log on. 

Any ideas of how to solve this

Thanks
I got this message too and solved it easily:

Go to System Preferences;
Users and Groups;
Select the Admin User and click the padlock to make changes; enter the Admin's password;
Click on the picture of the Admin; the word 'edit' should appear;
Select Camera;
Take a new picture of yourself and save it;
Lock the padlock again;
Restart the computer.  You could probably take a different option instead of 'Camera' but I didn't try that.