emerge redmine with mongrel problem

When I merge redmine-9999 with use mongrel, when merge done, I run /etc/init.d/mongrel_cluster start

development mongrel_cluster # /etc/init.d/mongrel_cluster start
Starting all mongrel_clusters...
ERROR RUNNING 'cluster::start': Plugin /cluster::start does not exist in category /commands
Use help command to get help
mongrel_rails cluster::start returned an error.

 * Configure mongrel rails.
ERROR RUNNING 'cluster::configure': Plugin /cluster::configure does not exist in category /commands
Use help command to get help
 *
 * You need to edit your /etc/conf.d/apache2 file and
 * add '-D PROXY' to APACHE2_OPTS.
 *
 * Execute the following command to start Redmine:
 * # /bin/nano /etc/apache2/vhosts.d/10_redmine_vhost.conf
 * # /etc/init.d/mongrel_cluster start
 * # /etc/init.d/apache2 start
 *

Our site is powered by Redmine written in ruby, but I have not set up it. Ask iceriderjabber.calculate-linux.org@, though he is now on vacation.