Redmine

Hi all,

I tried to modify email footer on setting page, but after I submit change then redirect 404 page.
I've check log file of Redmine, the message below:

Processing ApplicationController#index (for 111.240.18.17 at 2012-03-15 11:28:01) [GET]
  Parameters: {"commit"=>"儲存", "authenticity_token"=>"(I think this info need hidden?)", "settings"=>{"notified_events"=>["", "issue_added", "issue_updated"], "default_notification_option"=>"only_my_events", "mail_from"=>"redmine@tayanswa.tw", "emails_header"=>"", "bcc_recipients"=>"1", "emails_footer"=>"收到這個訊息，是因為您參與了專案管理系統。\r\n要改變接收訊息的設定值，請登入此網站", "plain_text_mail"=>"0"}}

ActionController::RoutingError (No route matches "/400.shtml" with {:method=>:get}):
  config/initializers/mongrel.rb:62:in `dispatch_cgi'

Rendering /home/myaccount/redmine/public/404.html (404 Not Found)

BTW, the system environment for my Redmine below:

About your application's environment
Ruby version              1.8.7 (x86_64-linux)
RubyGems version          1.3.6
Rack version              1.1.3
Rails version             2.3.11
Active Record version     2.3.11
Active Resource version   2.3.11
Action Mailer version     2.3.11
Active Support version    2.3.11
Application root          /home/myaccount/redmine
Environment               production
Database adapter          mysql
Database schema version   20111010202847

About your Redmine plugins
Redmine Issue Checklist plugin     1.0.1
DMSF                               1.2.2
CRM plugin                         2.2.3-light
Redmine Light Box plugin           0.0.1
Redmine Dnoise Workload plugin     0.0.1
Redmine Contacts Invoices plugin   0.0.2
Redmine Logs plugin                0.0.3
Redmine Local Avatars plugin       0.1.1
Screenshots                        0.1.0

I appreciate you if anyone could help me to solve this issue.