捆绑安装时出现Rails 4.0.2 spree_i18n错误

昨天，当我尝试捆绑安装spree_i18n（2-1稳定）时，发生了意外中断。现在，我再次尝试，但出现此错误：

Fetching git://github.com/spree/spree_i18n.git
remote: Reusing existing pack: 5457, done.
remote: Counting objects: 1, done.
remote: Total 5458 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (5458/5458), 5.43 MiB | 1.12 MiB/s, done.
Resolving deltas: 100% (2586/2586), done.
fatal: index file smaller than expected
Retrying git fetch --force --quiet --tags "/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c" due to error (2/3): Bundler::Source::Git::GitCommandError Git error: command `git fetch --force --quiet --tags "/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c"` in directory /usr/local/rvm/gems/ruby-2.1.0/bundler/gems/spree_i18n-a2c64740cdc7 has failed.
If this error persists you could try removing the cache directory '/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c'
fatal: index file smaller than expected
Retrying git fetch --force --quiet --tags "/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c" due to error (3/3): Bundler::Source::Git::GitCommandError Git error: command `git fetch --force --quiet --tags "/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c"` in directory /usr/local/rvm/gems/ruby-2.1.0/bundler/gems/spree_i18n-a2c64740cdc7 has failed.
If this error persists you could try removing the cache directory '/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c'
fatal: index file smaller than expected
Git error: command `git fetch --force --quiet --tags
"/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c"` in directory
/usr/local/rvm/gems/ruby-2.1.0/bundler/gems/spree_i18n-a2c64740cdc7 has failed.
If this error persists you could try removing the cache directory
'/usr/local/rvm/gems/ruby-2.1.0/cache/bundler/git/spree_i18n-9ca2061df39e8ec5a8680e02b37a93a3750bd57c'

我尝试删除错误中指定的目录，但结果相同。

我的Gemfile看起来像这样：

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.2'

# Use sqlite3 as the database for Active Record
gem 'sqlite3'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0'

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
#gem 'jquery-rails'
gem 'jquery-rails', '~> 3.0.0'

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.2'

group :doc do
  # bundle exec rake doc:rails generates the API under doc/api.
  gem 'sdoc', require: false
end

# Use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.1.2'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

# Spree
gem 'spree', github: 'spree/spree', branch: '2-1-stable'
gem 'spree_auth_devise', github: 'spree/spree_auth_devise', branch: '2-1-stable'
gem 'spree_paypal_express', :github => "radar/better_spree_paypal_express", :branch => "2-1-stable"
gem 'spree_fancy', :github => "spree/spree_fancy", :branch => "2-1-stable"
gem 'spree_reviews', github: 'spree/spree_reviews', branch: '2-1-stable'
gem 'spree_wishlist', :git => 'git://github.com/spree/spree_wishlist.git', :branch => "2-1-stable"
gem 'spree_email_to_friend', :git => 'git://github.com/spree/spree_email_to_friend.git', :branch => "2-1-stable"
gem 'deface', github: 'spree/deface'
gem 'spree_i18n', github: 'spree/spree_i18n', branch: '2-1-stable'

知道如何解决这个问题吗？