Solved! Go to Solution.
***UPDATE***
OK, I see where I had a problem: I used the same user for the database owner as the geoportal admin user. I have separated them out now.
...which leads to a new problem! When I log in as gptadmin in the Geoportal login page, I now get "Unable to connect to LDAP." where I should get "Welcome, gptadmin". Just to reiterate, I am not using LDAP; instead, I am using simple authentication, so it shouldn't even be trying to access LDAP.
Apologies if you've spent time thinking about this; the new problem is where it's at now!
Cheers,
Robin
Yes, the LDAP section is correctly commented-out and the Simple Authentication section is fine.