I have installed PostgreSQL 9.0 beta 4 on Windows 7 Professional (32 bit). Then I tried to install the RC1 version, but the installation finished with the following error message: The existing data directory (catalog version: 201004261) is not compatible with this server (catalog version: 201008051). Thank you for your help.
Joined: 21 Dec 2008 00:54:03
Messages: 205
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Earlier version of PostgreSQL 9.0 (i.e. Beta1...Beta5) are not compatible with PostgreSQL 9.0RC1.
You need to delete the existing data directory in order to use the latest PostgreSQL.
You can always back up them (if you have some data).
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