I closed the gallery and re uploaded upgrade.php and ran it. Got this onscreen message:
Preparing to update database...
Error performing MySQL command: INSERT INTO settings VALUES (210,'Default location of the photo previews?','filmstrip','Determines the location of the film-strip previews on the showphoto page.','top',26,5)
Error: Duplicate entry '210' for key 1
Upgrade complete! You may now remove the upgrade.php script
Still no table photopost.cache in the database, but did not get the 8 emails..........yet.