Running version 6.3.2 pg_dump on a 6.1 database

Hello,
I am trying to upgrade to postgres 6.3.2 from 6.1. I am having problems
dumping the 6.1 database with 6.1 pg_dump. I was told that the 6.3.2
pg_dump will dump a 6.1 database. I get the following error:

be_recvauth: unrecognized message type: 65536
postmaster: ConnStartup: Failed to authenticate client as Postgres
user 'bower' using <unknown authentication type>: be_recvauth:
unrecognized message type: 65536

Connection to database 'imagelib' failed.
Failed to authenticate client as Postgres user 'bower' using <unknown
authentication type>: be_recvauth: unrecognized message type: 65536

Should I be able to dump the 6.1 database, running the 6.1 postmaster
with the 6.3.2 pg_dump? If so how? If not where can I get a 6.1 pg_dump
that works? I have looked for patches, but can not find any. I read that the 6.2 pg_dump will dump a 6.1 database but cannot find it anywhere
either. Thanks in advance for any help.