OK, whew. I ran the upgrade installer and all is restored (locally, that is). So since I am a newbie

-- here is what I learned in case this happens to someone else...ZAP’s suggestion to look at the database in a text editor was good. I decided to try an upgrade, and it seems to have fixed the problem.
I created a local db with the same name as the remote, imported the data- downloaded the current modx installation- overwrote most of the modx files, making sure that I had a back up stored somewhere else- put the original config file back in (manager/includes) and ran the installer- updater. Then I copied my old assets files (images, and any assets folders I had created earlier) and all is well again.
Thanks to all who gave suggestions. I have a new motto- BACK UP EVERYTHING...I have no trust in my host and will be moving shortly.
Catherine