The following bug has been logged online:
Bug reference: 5696
Logged by: Tony Marston
Email address: tony@marston-home.demon.co.uk
PostgreSQL version: 9.0
Operating system: Widows XP
Description: cannot upgrade to 9.0.1
Details:
I have just installed version 9.0, and I tried to follow it immediately with
an upgrade to 9.0.1, but it failed with the following message:
The existing data directory (catalog version: ) is not compatible with this
server (catalog version: 201008051)