Redmine

I've installed a fresh copy of Redmine on an Ubuntu box a plugin development project. Once I got the basic Redmine install up and running and ran the migrations, everything seemed to work fine. However, anytime I get to a page which requires use of the Version class, an error is thrown.

For example, creating a Project works. However, when I try to view the Project, I get this:

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Completed 500 Internal Server Error in 167ms (ActiveRecord: 7.4ms)

ActionView::Template::Error (undefined method `joins' for "3.1.7.3":String):
42: <% end >
43:
44: <h1><= page_header_title ></h1>
45:
46: < if display_main_menu?(Herve Harster) >
47: <div id="main-menu">
48: <= render_main_menu(Herve Harster) %>
app/models/project.rb:455:in `shared_versions'
lib/redmine.rb:228:in `block (2 levels) in <top (required)>'
lib/redmine/menu_manager.rb:446:in `call'
lib/redmine/menu_manager.rb:446:in `allowed?'
lib/redmine/menu_manager.rb:164:in `block in menu_items_for'
lib/redmine/menu_manager.rb:163:in `each'
lib/redmine/menu_manager.rb:163:in `menu_items_for'
lib/redmine/menu_manager.rb:90:in `render_menu'
lib/redmine/menu_manager.rb:80:in `render_main_menu'
app/views/layouts/base.html.erb:45:in `_app_views_layouts_base_html_erb___3256852209764588002_58036380'
app/controllers/projects_controller.rb:153:in `show'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Rendered /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.2.4/lib/action_dispatch/middleware/templates/rescues/_source.erb (28.8ms)
  Rendered /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.2.4/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (3.3ms)
  Rendered /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.2.4/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.0ms)
  Rendered /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.2.4/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within rescues/layout (44.9ms)
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