Another note to self....don't do upgrades when you haven't had much sleep.
It occurred to me that that since I had uploaded edited config-inc.php and config-intr.php files that the Reviewpost version number (3.3.1) would be changed in the Admin. So perhaps I hadn't run the upgrade script after all. So I uploaded a new upgrade.php file and went through all the steps . I still had the same errors as in the initial post in 3.1.1 upgrade step 2. All other steps completed without errors. The above posted errors in Admin now seem to have disappeared.
All the thumbs on the Reviewpost home page are not showing up, but over half of the photos for the actual product reviews do show up. I tried to run rebuild thumbs, etc. in Admin but got errors. I'm not sure how to get the thumbs back for the main page.
Is this thoroughly confusing now or do you have any suggestions.