Hi-
what ended up being your solution? I have a similar problem:
https://openacs.org/forums/message-view?message_id=17510
I had an old PG install too, but i deleted everything that i could find... and started over... same problem. i have hunch that the data model didnt get loaded? the install only tool 3 minutes... that seems too fast... any help would be greatly appreciated...
thank you
duncan shannon