But you should have used the 18.104.22.168 file first.
The initial problem was that I had overwritten all the server files with the base install files and overwrote anything that was changed since the upgrade of 7.6.1 months ago. I did not have a backup of the server files other than a daily database backup.
I don't use the gallery. I do have some styles to reload - that's a minor task. I do have some other small CP updates. But so far, it's looking a lot better than it was yesterday.