After updating 10.13 to 10.13.1 beta 1 I was unable to join wifi. Tried restarting computer. That didn't work. Tried tuning wifi off and on again. That didn't work. What eventually worked was restarting the modem. But I never had to do that before after a mac os update. I've had all the betas from 10.7.2 right up to 10.13 and after every update wifi connected automatically. Something bad happened going from 10.13 to 10.13.1 requiring a modem restart. Don't know why. At least I got it working again. Otherwise I would have been downgrading to 10.13 again. No need now. Anyone else experiencing wifi problems like this when going from 10.13 to 10.13.1?