Upgrading from 7.4 to 8.1

We are preparing to upgrade to 8.1 from 7.4 Postrgres.  In this case, it is a Red Hat
Linux server.  Using the 8.1.4 pg_dumpall, pointed at the 7.4 instance, we get the
following errors.

Anyone know why?

Naomi



/applications/pgsql/8.1.4/bin/pg_dumpall   --
-- PostgreSQL database cluster dump
--

\connect postgres

--
-- Roles
--

CREATE ROLE "";
ALTER ROLE "" WITH NOSUPERUSER INHERIT NOCREATEROLE NOCREATEDB LOGIN;
pg_dumpall: query failed: ERROR:  type "e" does not exist
pg_dumpall: query was: SELECT useconfig[1] FROM pg_shadow WHERE usename = E'\003'


--
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Naomi Walker                          Chief Information Officer
Eldorado Computing, Inc.              nwalker@eldocomp.com 602-604-3100
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Far and away the best prize that life offers is the chance to work hard at
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