I've upgraded my MacBook to Sierra. But now I can't really login anymore!?
So when I boot I immediately have to enter my password because of FileVault encryption. That works. Then appears the 'growing white line', indicating the boot process. Then there's another login 'situation'. I select my avatar, I enter my password again, MacOS seems to accept it. But then after a while returns to the login screen ... so I'm stuck!? Any ideas?