Redmine

1. Click on an existing project in the main view
2. Click on "new ticket"

Expectation:
The "new ticket" screen opens and a new ticket can be created.

Actual behaviour:
The browser window shows:

Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

In the logfile the following error message can be found:

Processing SettingsController#index (for 212.18.18.20 at 2011-12-21 12:58:35) [GET]
  Parameters: {"action"=>"index", "controller"=>"settings"}
Rendering template within layouts/admin
Rendering settings/edit

ActionView::TemplateError (undefined method `default_issue_start_date_to_creation_date?' for #<Class:0x2b8433cc31d8>) on line #8 of app/views/settings/_issues.html.erb:
5: 
6: <p><%= setting_check_box :issue_group_assignment %></p>
7: 
8: <p><%= setting_check_box :default_issue_start_date_to_creation_date %></p>
9: 
10: <p><%= setting_check_box :display_subprojects_issues %></p>
11: 

    app/helpers/settings_helper.rb:74:in `send'
    app/helpers/settings_helper.rb:74:in `setting_check_box'
    app/views/settings/_issues.html.erb:8
    app/views/settings/_issues.html.erb:1
    app/views/common/_tabs.html.erb:24
    app/views/common/_tabs.html.erb:23:in `each'
    app/views/common/_tabs.html.erb:23
    app/helpers/application_helper.rb:222:in `render_tabs'
    app/views/settings/edit.html.erb:3
    app/controllers/settings_controller.rb:25:in `index'
    /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
    /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
    /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
    /usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
    /usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
    /usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:82:in `start'

Rendering /var/redmine-1.3.0/public/500.html (500 Internal Server Error)

Environment:
Ruby 1.8.7
Rails 2.3.14

Hint: Recently upgraded from 0.8.x like described in http://www.redmine.org/projects/redmine/wiki/RedmineUpgrade with no error messages.