Hi guys, As soon as I updated to the release version of Sierra I turned off beta updates in system preferences. Nevertheless, yesterday I noticed PB 1 appearing in available updates, and it started auto-downloading. I cancelled the download, but woke up this morning to see that my Mac had auto-updated to PB 1 overnight! Really pissed off. I was free to beta test over the summer as I had some time off but now I need a rock-solid system. So: Has this happened to anyone else? Is there any way to roll back to 10.12 release candidate? How can I stop PB 2 (or whatever the next public beta update is) from installing? (Without turning off automatic updates as that is a feature I like). Thanks for any input.