Gemfile. pg_ext loading error

gistfile1.txt

#bundle install to set this stuff up
source :rubyforge
gem 'rack'
gem 'rails', '>= 3.0.4'
#gem 'rack-ssl'

#gem 'thin'
gem 'unicorn'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

#gem 'sqlite3-ruby', :require => 'sqlite3'
gem 'eventmachine'
# gem 'thin'
# Use unicorn as the web server

gem 'activemerchant', git: 'git://github.com/square/active_merchant.git'

gem 'autotest-rails'

gem 'authlogic', :git => 'git://github.com/odorcicd/authlogic.git', :branch => 'rails3'
gem 'declarative_authorization'
gem 'dynamic_form', :git => 'https://github.com/rails/dynamic_form.git'

gem 'ri_cal', :git => 'https://github.com/rubyredrick/ri_cal.git'

#gem 'RedCloth', '>= 4.1.1'

gem 'pg', '>= 0.11.0'

gem 'spatial_adapter'

gem 'GeoRuby'

gem 'json'

gem 'paperclip'

gem 'uuid'

gem 'will_paginate', "~> 3.0.pre2"

gem 'jquery-rails'

gem 'acts_as_list'

group :development, :test, :staging do
  gem 'ruby-prof'
end
# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug19'

# Bundle the extra gems:
# gem 'bj'
# gem 'nokogiri'
# gem 'sqlite3-ruby', :require => 'sqlite3'
# gem 'aws-s3', :require => 'aws/s3'

# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
# group :development, :test do
#   gem 'webrat'
# end

group :development, :test do
	gem 'linecache19' #, path: "/Volumes/Zeus/Users/gisborne/Downloads/linecache19-0.5.13.gem"  
	gem 'ruby-debug-base19x', '>= 0.11.26' if RUBY_VERSION.include? "1.9"
	gem 'ruby-debug-base' if RUBY_VERSION.include? "1.8"
	gem "ruby-debug-ide", '>= 0.4.17.beta3'
  gem "rspec-rails", ">= 2.1.0"
  gem "cucumber-rails", ">= 0.3.2"
  gem "webrat", ">= 0.7.2"
  # gem "database_cleaner"