Thanks for the help, everyone!
I got it back up and running, but it's no longer staking. I had a problem getting it to stake on the previous version, but eventually it started working. Not sure what happened. The wallet has been open and unlocked for about four or five hours now and has not begun staking. Any idea what the issue is? That little diamond just won't turn blue!
restart wallet wait until all sync bars are gone
wait 1 min longer
now unlock in "only for.." mode
if u have mature coins bottom right diamond icon should become blue after 1 or 2 min
(unlock to early after restart wallet can lead to POS not starting)