gnome shell 3.3.92 can't show the shell

[henry cui <hhenry cui gmail com>]

hi 
I  upgraded gnome shell to 3.3.92 yesterday. Then I login  gnome desktop,it's empty there.there's no title bar and can't activate shell through top-left  corner.
but I login in with guest account,it's ok. I guess some extensions caused gnome can't show the desktop,anyone know how to deal or any suggestion? 

Thanks a lot.  

-- 
best,
henry cui