My Board came back Online not long after I posted this Topic. Maybe an hour or so. I also did not have any notice of Maintenance going on in my AdminCP. Nor any email from IPB. When my Board went down with that error I went to this Community Forum and then saw the Maintenance warning, and then Posted this Topic.
Not a huge set back or problem for me and my Forums. But if I had known about the scheduled Maintenance, and the possibility of issues, I probably would have Noted that on my Board to my Members and even taken if Offline until the Maintenance was completed.
Regardless, with that said, I am impressed and appreciative with how the IPB team keeps the software and hosting up to date and secure.