Redmine › Extended Fields

Completed 500 Internal Server Error in 232ms

ActionView::Template::Error (wrong number of arguments (1 for 0)):
    1: <% projects = Project.all_public.active(:order => 'name').collect{ |project| [ project.name, project.id ] } %>
    2: 
    3: <% unless defined? observe_field %>
    4: 
  app/models/project.rb:91:in `block in <class:Project>'
  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/custom_fields/_form.html.erb:43:in `_app_views_custom_fields__form_html_erb___77353756__615901828'
  app/views/custom_fields/edit.html.erb:6:in `block in _app_views_custom_fields_edit_html_erb___417127426__616092548'
  app/helpers/application_helper.rb:944:in `labelled_form_for'
  app/views/custom_fields/edit.html.erb:5:in `_app_views_custom_fields_edit_html_erb___417127426__616092548'

Environment:
  Redmine version                          2.3.0.stable
  Ruby version                             2.0.0 (i686-linux)
  Rails version                            3.2.13
  Environment                              production
  Database adapter                         Mysql2
Redmine plugins:
  advanced_roadmap                         0.8.0
  clipboard_image_paste                    1.6a
  due_date_reminder                        0.3.2
  extended_profile                         1.2.0
  google_analytics_plugin                  0.3.0-beta
  my_projects                              1.0
  openid_fix                               0.1.0
  project_overview                         1.1.0
  redmine_banner                           0.0.8
  redmine_documents_short                  0.1.0
  redmine_embedded_video                   0.0.3.1
  redmine_hide_estimated_hours             1.0.3
  redmine_hours                            0.1.0
  redmine_information                      1.0.2
  redmine_inline_note_images_plugin        0.0.1
  redmine_issue_checklist                  2.0.5
  redmine_issue_extensions                 0.2.0
  redmine_issue_status_colors              0.0.1
  redmine_open_links_in_new_window         0.0.3
  redmine_plugin_views_revisions           0.0.1
  redmine_silencer                         0.2.0
  redmine_spent_time                       2.5.0
  redmine_tags                             2.0.1-dev
  redmine_theme_changer                    0.1.0
  redmine_work_time                        0.2.11
  redmine_xls_export                       0.2.1.t2
  sidebar_hide                             0.0.2
  wiking                                   0.0.3