Problem with db:create

My ruby app always created the databases on postgres just fine, but, a
days ago, I’ve tried to create a new project and when I execute the
command “db:create:all” i got the following error:

Couldn’t create database for {“encoding”=>“unicode”, “username”=> “-my
username-”, “adapter”=>“postgresql”,
“database”=>“argh_development”, “host”=>“127.0.0.1”, “pool”=>5,
“password”=>"-my password-"}
NoMethodError: undefined method `fformat’ for #PGresult:0xb6706be0:
SHOW client_min_messages

What happens?

My database.yml is looking like this:

PostgreSQL. Versions 7.4 and 8.x are supported.

Install the ruby-postgres driver:

gem install ruby-postgres

On Mac OS X:

gem install ruby-postgres – --include=/usr/local/pgsql

On Windows:

gem install ruby-postgres

Choose the win32 build.

Install PostgreSQL and put its /bin directory on your path.

development:
adapter: postgresql
encoding: unicode
database: argh_development
pool: 5
username: ******
password: ******
host: 127.0.0.1

Connect on a TCP socket. Omitted by default since the client uses a

domain socket that doesn’t need configuration. Windows does not

have

domain sockets, so uncomment these lines.

#host: localhost
#port: 5432

Schema search path. The server defaults to $user,public

#schema_search_path: myapp,sharedapp,public

Minimum log levels, in increasing order:

debug5, debug4, debug3, debug2, debug1,

log, notice, warning, error, fatal, and panic

The server defaults to notice.

#min_messages: warning

Warning: The database defined as “test” will be erased and

re-generated from your development database when you run “rake”.

Do not set this db to the same as development or production.

test:
adapter: postgresql
encoding: unicode
database: argh_test
pool: 5
username: ******
password: ******
host: 127.0.0.1

Connect on a TCP socket. Omitted by default since the client uses a

domain socket that doesn’t need configuration. Windows does not

have

domain sockets, so uncomment these lines.

#host: localhost
#port: 5432

Schema search path. The server defaults to $user,public

#schema_search_path: myapp,sharedapp,public

Minimum log levels, in increasing order:

debug5, debug4, debug3, debug2, debug1,

log, notice, warning, error, fatal, and panic

The server defaults to notice.

#min_messages: warning

production:
adapter: postgresql
encoding: unicode
database: argh_production
pool: 5
username: ******
password: ******
host: 127.0.0.1

Connect on a TCP socket. Omitted by default since the client uses a

domain socket that doesn’t need configuration. Windows does not

have

domain sockets, so uncomment these lines.

#host: localhost
#port: 5432

Schema search path. The server defaults to $user,public

#schema_search_path: myapp,sharedapp,public

Minimum log levels, in increasing order:

debug5, debug4, debug3, debug2, debug1,

log, notice, warning, error, fatal, and panic

The server defaults to notice.

#min_messages: warning

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