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safari won't open

  1. P

    Safari 10.1 update for El Cap, won't now open?

    It was done updating in the App Store, asked to restart, at some point it crashed and I had to manually turn off/on again. Now App Store says 10.1 installed, but won't open at all? Can I roll back Safari using Time Machine or is it a whole restore I need to do? Thanks for any input!