Plugin does not seem to work with Redmine 2.2.2

[wrlmicrohome]

I installed the plugin, but found that it can not be configured. When I click Administration--Plugins--Configure, a 404 error apprears: The page you were trying to access doesn't exist or has been removed.

I don't know the reason, please help to fix it, thanks.

Environment:
Redmine version 2.2.2.stable
Ruby version 1.9.3 (x86_64-linux)
Rails version 3.2.11
Environment production
Database adapter Mysql2
Redmine plugins:
redmine_rubycas 0.0.6