I’ve installed Open Project and plugins on Ubuntu 12.04.

The server works fine:

root@usuario-VirtualBox:/home/usuario/dev/openproject# bundle exec rails server
require ‘rails/all’… 0.720s
Bundler.require… 7.260s
=> Booting Thin
=> Rails 3.2.17 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Application.initialize!… [deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.
7.590s
Thin web server (v1.6.2 codename Doc Brown)
Maximum connections set to 1024
Listening on 0.0.0.0:3000, CTRL+C to stop
Started GET “/” for 127.0.0.1 at 2014-03-06 21:08:30 –0600

But, When I open in the browser, http://0.0.0.0:3000 or http://localhost:3000, I got the following error, terminal shows:

Completed 500 Internal Server Error in 1074.7ms
ActionView::Template::Error (couldn’t find file ‘jquery.atwho’
(in /home/usuario/dev/openproject/app/assets/javascripts/application.js.erb:16)):
42: <%= stylesheet_link_tag ‘accessibility’ >
43: < end %>
44:
45: <%= javascript_include_tag ‘application’ %>
46:
47: <%= user_specific_javascript_includes %>
48:
app/views/layouts/base.html.erb:45:in `_app_views_layouts_base_html_erb__477970257_96243510’

And the browser shows:

Sprockets::FileNotFound in Welcome#index
Showing /home/usuario/dev/openproject/app/views/layouts/base.html.erb where line #45 raised:
couldn’t find file ‘jquery.atwho’
(in /home/usuario/dev/openproject/app/assets/javascripts/application.js.erb:16)
Extracted source (around line #45):
42: <%= stylesheet_link_tag ‘accessibility’ >
43: < end %>
44:
45: <%= javascript_include_tag ‘application’ %>
46:
47: <%= user_specific_javascript_includes %>
48:
Rails.root: /home/usuario/dev/openproject