Bundler-Psych issue report

The command you ran:
$ rails runner ';'

Exception backtrace(s), if any: (warnings, in this case)
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant ANY
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF8
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF16LE
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF16BE
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant ANY
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF8
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF16LE
/Users/peeja/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/x86_64-darwin11.2.0/psych.bundle: warning: already initialized constant UTF16BE

Your Gemfile:
source 'https://rubygems.org'

gem 'rails', '3.2.11'

gem 'sqlite3'
gem 'jquery-rails'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

group :test, :development do
  gem 'rspec-rails'
end

Your Gemfile.lock:
GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (3.2.11)
      actionpack (= 3.2.11)
      mail (~> 2.4.4)
    actionpack (3.2.11)
      activemodel (= 3.2.11)
      activesupport (= 3.2.11)
      builder (~> 3.0.0)
      erubis (~> 2.7.0)
      journey (~> 1.0.4)
      rack (~> 1.4.0)
      rack-cache (~> 1.2)
      rack-test (~> 0.6.1)
      sprockets (~> 2.2.1)
    activemodel (3.2.11)
      activesupport (= 3.2.11)
      builder (~> 3.0.0)
    activerecord (3.2.11)
      activemodel (= 3.2.11)
      activesupport (= 3.2.11)
      arel (~> 3.0.2)
      tzinfo (~> 0.3.29)
    activeresource (3.2.11)
      activemodel (= 3.2.11)
      activesupport (= 3.2.11)
    activesupport (3.2.11)
      i18n (~> 0.6)
      multi_json (~> 1.0)
    arel (3.0.2)
    builder (3.0.4)
    coffee-rails (3.2.2)
      coffee-script (>= 2.2.0)
      railties (~> 3.2.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.4.0)
    diff-lcs (1.1.3)
    erubis (2.7.0)
    execjs (1.4.0)
      multi_json (~> 1.0)
    hike (1.2.1)
    i18n (0.6.1)
    journey (1.0.4)
    jquery-rails (2.2.0)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    json (1.7.6)
    mail (2.4.4)
      i18n (>= 0.4.0)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    mime-types (1.19)
    multi_json (1.5.0)
    polyglot (0.3.3)
    rack (1.4.4)
    rack-cache (1.2)
      rack (>= 0.4)
    rack-ssl (1.3.2)
      rack
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (3.2.11)
      actionmailer (= 3.2.11)
      actionpack (= 3.2.11)
      activerecord (= 3.2.11)
      activeresource (= 3.2.11)
      activesupport (= 3.2.11)
      bundler (~> 1.0)
      railties (= 3.2.11)
    railties (3.2.11)
      actionpack (= 3.2.11)
      activesupport (= 3.2.11)
      rack-ssl (~> 1.3.2)
      rake (>= 0.8.7)
      rdoc (~> 3.4)
      thor (>= 0.14.6, < 2.0)
    rake (10.0.3)
    rdoc (3.12)
      json (~> 1.4)
    rspec (2.11.0)
      rspec-core (~> 2.11.0)
      rspec-expectations (~> 2.11.0)
      rspec-mocks (~> 2.11.0)
    rspec-core (2.11.1)
    rspec-expectations (2.11.2)
      diff-lcs (~> 1.1.3)
    rspec-mocks (2.11.1)
    rspec-rails (2.11.0)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      railties (>= 3.0)
      rspec (~> 2.11.0)
    sass (3.2.5)
    sass-rails (3.2.6)
      railties (~> 3.2.0)
      sass (>= 3.1.10)
      tilt (~> 1.3)
    sprockets (2.2.2)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sqlite3 (1.3.7)
    thor (0.16.0)
    tilt (1.3.3)
    treetop (1.4.12)
      polyglot
      polyglot (>= 0.3.1)
    tzinfo (0.3.35)
    uglifier (1.3.0)
      execjs (>= 0.3.0)
      multi_json (~> 1.0, >= 1.0.2)

PLATFORMS
  ruby

DEPENDENCIES
  coffee-rails (~> 3.2.1)
  jquery-rails
  rails (= 3.2.11)
  rspec-rails
  sass-rails (~> 3.2.3)
  sqlite3
  uglifier (>= 1.0.3)

Your Bundler configuration settings:
Settings are listed in order of priority. The top value will be used.

What version of bundler you are using
Bundler version 1.3.0.pre.5

What version of Ruby you are using
ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11.2.0]

What version of Rubygems you are using
1.8.24

Whether you are using RVM, and if so what version
<No rvm found>

Whether you have the rubygems-bundler gem, which can break gem executables
<rubygems-bundler not found>

Whether you have the open_gem gem, which can cause rake activation conflicts
open_gem (1.4.2)