BUG #6591: pg_dump version not compatible

The following bug has been logged on the website:

Bug reference:      6591
Logged by:          Helgi Steinar
Email address:      helgisteinar@gmail.com
PostgreSQL version: 9.1.3
Operating system:   Mac OSX 10.7.3
Description:=20=20=20=20=20=20=20=20

I downloaded and installed the version of Postgres using the installer from
http://www.enterprisedb.com/products-services-training/pgdownload#osx

When trying to use pg_dump the result is

pg_dump: server version: 9.1.3; pg_dump version: 9.0.5