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Current configuration:
Gem list:

• LOCAL GEMS ***

aasm (4.0.8)
actionmailer (4.2.0, 3.2.21)
actionpack (4.2.0, 3.2.21)
actionview (4.2.0)
activejob (4.2.0)
activemodel (4.2.0, 3.2.21)
activerecord (4.2.0, 3.2.21)
activeresource (3.2.21)
activesupport (4.2.0, 3.2.21)
arel (6.0.0, 3.0.3)
bigdecimal (1.2.0)
block_helpers (0.3.3)
bourbon (4.1.0)
builder (3.2.2, 3.0.4)
bundler (1.7.10, 1.3.1)
capybara (2.1.0)
childprocess (0.5.5)
coderay (1.1.0)
database_cleaner (1.4.0)
diff-lcs (1.2.5)
dispatcher (0.0.1)
erubis (2.7.0)
faker (1.4.3)
faraday (0.8.9)
faraday_middleware (0.9.1)
ffi (1.9.6)
fuubar (2.0.0)
globalid (0.3.0)
hashie (1.2.0)
headless (1.0.2)
highline (1.6.21)
hike (1.2.3)
hoe (3.13.0)
i18n (0.7.0)
inifile (3.0.0)
io-console (0.4.2)
journey (1.0.4)
jquery-rails (3.1.2)
json (1.8.1, 1.7.7)
loofah (2.0.1)
mail (2.6.3, 2.5.4)
metaclass (0.0.4)
method_source (0.8.2)
mime-types (2.4.3, 1.25.1)
mini_portile (0.6.2)
minitest (5.5.0)
mocha (1.0.0)
multi_json (1.10.1)
multipart-post (1.2.0)
mysql2 (0.3.17)
net-http-persistent (2.8)
net-ldap (0.3.1)
nokogiri (1.6.5)
polyglot (0.3.5)
power_assert (0.2.2)
pry (0.10.1)
pry-nav (0.2.4)
psych (2.0.0)
rack (1.6.0, 1.4.5)
rack-cache (1.2)
rack-openid (1.4.2)
rack-ssl (1.3.4)
rack-test (0.6.2)
rails (4.2.0, 3.2.21)
rails-deprecated_sanitizer (1.0.3)
rails-dom-testing (1.0.5)
rails-html-sanitizer (1.0.1)
railties (4.2.0, 3.2.21)
rake (10.4.2)
rake-compiler (0.9.4)
rakegen (0.6.6)
rbpdf (1.18.4)
rdoc (4.2.0, 4.0.0, 3.12.2)
redcarpet (2.3.0)
request_store (1.0.5)
rmagick (2.13.4)
rspec (3.1.0)
rspec-core (3.1.7)
rspec-expectations (3.1.2)
rspec-mocks (3.1.3)
rspec-rails (3.1.0)
rspec-support (3.1.2)
ruby-hmac (0.4.0)
ruby-openid (2.3.0)
ruby-progressbar (1.7.1)
rubygems-update (2.4.5)
rubyzip (1.1.6)
sass (3.4.9)
selenium-webdriver (2.44.0)
shoulda (3.3.2)
shoulda-context (1.0.2)
shoulda-matchers (1.4.1)
slim (3.0.1)
slop (3.6.0)
sprockets (2.12.3, 2.2.3)
sprockets-rails (2.2.2)
temple (0.7.4)
test-unit (3.0.9)
thor (0.19.1, 0.17.0)
thread_safe (0.3.4)
tilt (1.4.1)
transifex-ruby-fork-jg (0.1.0)
treetop (1.4.15)
tzinfo (1.2.2, 0.3.42)
webrat (0.7.3)
websocket (1.2.1)
xpath (2.0.0)
yard (0.8.7.6)

ruby 2.0.0p353 (2013-11-22) [x86_64-linux]
Rails 3.2.21
Redmine 2.6

plugins:

clipboard_image_paste
redmine_close_button
redmine_code_review
redmine_dashboard
redmine_lightbox2
scrum

Log

Connecting to database specified by database.yml
Creating scope :sorted. Overwriting existing method User.sorted.
Creating scope :sorted. Overwriting existing method Group.sorted.
Creating scope :system. Overwriting existing method Enumeration.system.
Started GET "/" for 192.168.233.1 at 2015-01-06 07:55:26 +0800
Processing by WelcomeController#index as HTML
  Current user: yourlin (id=5)
  Rendered news/_news.html.erb (25.3ms)
  Rendered welcome/index.html.erb within layouts/base (87.2ms)
  Rendered plugins/redmine_code_review/app/views/code_review/_html_header.html.erb (0.7ms)
Missing template, responding with 404
  Rendered common/error.html.erb within layouts/base (0.7ms)
  Rendered plugins/redmine_code_review/app/views/code_review/_html_header.html.erb (0.0ms)
Completed 500 Internal Server Error in 404.7ms

  * "/opt/redmine/plugins/redmine_lightbox2/app/views" 
  * "/opt/redmine/plugins/redmine_dashboard/app/views" 
  * "/opt/redmine/plugins/redmine_code_review/app/views" 
  * "/opt/redmine/plugins/redmine_close_button/app/views" 
  * "/opt/redmine/plugins/clipboard_image_paste/app/views" 
  * "/opt/redmine/app/views" 
):
    11: <%= stylesheet_link_tag 'rtl', :media => 'all' if l(:direction) == 'rtl' %>
    12: <%= javascript_heads %>
    13: <%= heads_for_theme %>
    14: <%= call_hook :view_layouts_base_html_head %>
    15: <!-- page specific tags -->
    16: <%= yield :header_tags -%>
    17: </head>
  lib/redmine/hook.rb:111:in `block in render_on'
  lib/redmine/hook.rb:61:in `block (2 levels) in call_hook'
  lib/redmine/hook.rb:61:in `each'
  lib/redmine/hook.rb:61:in `block in call_hook'
  lib/redmine/hook.rb:58:in `tap'
  lib/redmine/hook.rb:58:in `call_hook'
  lib/redmine/hook.rb:158:in `call_hook'
  app/views/layouts/base.html.erb:14:in `_app_views_layouts_base_html_erb__332707264179082700_38922380'
  app/controllers/application_controller.rb:466:in `block (2 levels) in render_error'
  app/controllers/application_controller.rb:464:in `render_error'
  app/controllers/application_controller.rb:452:in `render_404'
  app/controllers/application_controller.rb:476:in `missing_template'