Ruby-on-rails – getting error messsage when starting rails console:

Hi there Im trying to start rails console so I typed "rails console" at the command line and I get this error message on the console

/Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection': database configuration does not specify adapter (ActiveRecord::AdapterNotSpecified)
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:39:in `resolve_string_connection'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:23:in `spec'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:127:in `establish_connection'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/railtie.rb:76:in `block (2 levels) in <class:Railtie>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:42:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/base.rb:716:in `<top (required)>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/railtie.rb:41:in `block in <class:Railtie>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `call'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `block in load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/engine.rb:429:in `block in load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application/railties.rb:8:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application/railties.rb:8:in `all'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/engine.rb:429:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application.rb:153:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:27:in `start'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:8:in `start'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

Seems like it cant find the database adapter. Any I dea how to resolve this?
Much appreciated

Here is the database.yml file:

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'

#==============================================================================
Listings_development:
  adapter: sqlite3
  database: db/Listings.sqlite3
  pool: 5
  timeout: 5000

# 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.
Listings_test:
  adapter: sqlite3
  database: db/Listings.sqlite3
  pool: 5
  timeout: 5000

Listings_production:
  adapter: sqlite3
  database: db/Listings.sqlite3
  pool: 5
  timeout: 5000

Here are the gems installed:

Gems included by the bundle:
* actionmailer (3.2.1)
* actionpack (3.2.1)
* activemodel (3.2.1)
* activerecord (3.2.1)
* activeresource (3.2.1)
* activesupport (3.2.1)
* arel (3.0.2)
* builder (3.0.0)
* bundler (1.0.22)
* coffee-rails (3.2.2)
* coffee-script (2.2.0)
* coffee-script-source (1.2.0)
* erubis (2.7.0)
* execjs (1.3.0)
* hike (1.2.1)
* i18n (0.6.0)
* journey (1.0.3)
* jquery-rails (2.0.1)
* json (1.6.5)
* mail (2.4.3)
* mime-types (1.17.2)
* multi_json (1.1.0)
* polyglot (0.3.3)
* rack (1.4.1)
* rack-cache (1.2)
* rack-ssl (1.3.2)
* rack-test (0.6.1)
* rails (3.2.1)
* railties (3.2.1)
* rake (0.9.2.2)
* rdoc (3.12)
* sass (3.1.15)
* sass-rails (3.2.4)
* sprockets (2.1.2)
* sqlite3 (1.3.5)
* thor (0.14.6)
* tilt (1.3.3)
* treetop (1.4.10)
* tzinfo (0.3.32)
* uglifier (1.2.3)