Chrome updated and Norton Identity Safe and Toolbar stopped working

Google has updated Chrome again and as usual, Norton Identity Safe and the Norton Toolbar have stopped working. Clicking the icon does nothing. The only way to make Chrome functional again is to (1) Click Yest to stop the "unknown plug-in" or (2) close Chrome and open it again. I have Norton Internet Security 20.3.1.22 and Chrome 27.0.1453.110 m.

 

 

[edit: Clarified subject.]