Redmine

Hi

We have recently upgraded redmine from 1.1.2 to 2.5.2 Everything went smooth, almost all issues are fine and show no errors. Attachments are working, etc.

However, some issue give us the following error:

Started GET "/issues/6873" for 192.168.240.2 at 2014-10-29 20:53:49 +0400
Processing by IssuesController#show as HTML
  Parameters: {"id"=>"6873"}
  Current user: litvak (id=11)
  Rendered issues/_action_menu.html.erb (3.3ms)
  Rendered issue_relations/_form.html.erb (1.5ms)
  Rendered issues/_relations.html.erb (2.8ms)
  Rendered issues/_history.html.erb (13.3ms)
  Rendered issues/show.html.erb within layouts/base (56.8ms)
Completed 500 Internal Server Error in 745.5ms

ActionView::Template::Error (wrong constant name issue):
    13:       <% end %>
    14:     </ul>
    15:     <% end %>
    16:     <%= render_notes(issue, journal, :reply_links => reply_links) unless journal.notes.blank? %>
    17:     </div>
    18:   </div>
    19:   <%= call_hook(:view_issues_history_journal_bottom, { :journal => journal }) %>
  app/models/journal.rb:103:in `attachments'
  app/helpers/application_helper.rb:639:in `parse_inline_attachments'
  app/helpers/application_helper.rb:592:in `block (2 levels) in textilizable'
  app/helpers/application_helper.rb:591:in `each'
  app/helpers/application_helper.rb:591:in `block in textilizable'
  app/helpers/application_helper.rb:612:in `parse_non_pre_blocks'
  app/helpers/application_helper.rb:590:in `textilizable'
  app/helpers/journals_helper.rb:36:in `render_notes'
  app/views/issues/_history.html.erb:16:in `block in _app_views_issues__history_html_erb__4041830703231949103_43166160'
  app/views/issues/_history.html.erb:2:in `each'
  app/views/issues/_history.html.erb:2:in `_app_views_issues__history_html_erb__4041830703231949103_43166160'
  app/views/issues/show.html.erb:120:in `_app_views_issues_show_html_erb__1606033780085670145_69896779655260'
  app/controllers/issues_controller.rb:128:in `block (2 levels) in show'
  app/controllers/issues_controller.rb:125:in `show'

I have checked that particular one in MySQL database and it has no attachments.

Please give any hint on where I could look to find the reason of this issue.

Thanks in advance.