Ok, mine is now working. I basically deleted all files off the host except .htaccess and the wp-content and wp-images folders, and then reinstalled it. I ran the upgrade program. I did this time use
last time I used
Not sure if that made a difference, or if maybe one of the files wasn't installed properly last time. I have seen two or three different people talking about the same errors I got, so not sure how we all happened upon the same error.