I upgraded a site to 5.7 and got a message to upgrade the contact layout editor to 1.2.1. After installation a database update has to be run which stops with the message [Error: Upgrade org.civicrm.contactlayout to revision 1000] DB Error: no such field I tried again on another site and got the same problem. Uninstalling & re-installing the extension fixed the problem, but that might not suit those who had made many changes. Is there a fix for this ?
Thanks for pointing out the bug in the upgrade code. I've pushed up a fix and published a new release: 1.2.2.