Dunno how I missed having to run the upgrade.php -- I had not seen that.
After running, I don't get that error, but I still also don't get any results from the simple "Search Reviews" at the top of the reviews list on the main page. It just goes to the advanced search page. Then the query works.
I'm just searching on "propen"...
At least I got 1 step forward and not 2 forward and 1 back