I am upgrading Zen Cart from version 1.55f to ver 1.56c but on the database upgrade screen I get the message "Could not update to version 1.5.6. We detect that you currently have v1.5.4, and must perform the updates to get to version 1.5.5 first." and upgrade will not complete.
The project version fields in the database show 5.5f for zencart main and 5.5 for Zen cart database. I have not included any plugins although there are plugin tables in the database.
I am using PHP ver 7.0.33
Thank you