Getting 404 error

[tvaughan73]

when clicking configure I get 404 error and the log shows:

Processing by SettingsController#plugin as HTML
Parameters: {"id"=>"due_date_reminder"}
Current user: admin (id=1)
Rendered settings/plugin.html.erb within layouts/admin (4.5ms)
Missing template, responding with 404
Rendered common/error.html.erb within layouts/base (0.4ms)
Rendered plugins/redmine_announcements/app/views/application/_announcements.html.erb (0.7ms)
Completed 404 Not Found in 31ms (Views: 14.8ms | ActiveRecord: 0.6ms)

Environment:
Redmine version 2.3.1.stable
Ruby version 1.9.3 (x86_64-linux)
Rails version 3.2.13
Environment production
Database adapter Mysql2