Redmine

Upgrade instructions tell me to check requirements in step 1. The link sends me to a page that says "Official releases include the appropriate Rails version in their vendor directory. So no particular action is needed." I am upgrading to an official release, so I don't take any particular action. However:

root@bite:/srv/redmine.new# rake db:migrate RAILS_ENV=production
(in /srv/redmine.new)
rake aborted!
RubyGem version error: rack(1.0.1 not ~> 1.1.0)

(See full trace by running task with --trace)
root@bite:/srv/redmine.new# gem install -v=1.1.0 rack
Successfully installed rack-1.1.0
1 gem installed
Installing ri documentation for rack-1.1.0...
Installing RDoc documentation for rack-1.1.0...
root@bite:/srv/redmine.new# rake db:migrate RAILS_ENV=production
(in /srv/redmine.new)
rake aborted!
undefined method `deep_symbolize_keys' for "存储匹配规则后提\344\272\244":String

(See full trace by running task with --trace)
root@bite:/srv/redmine.new# rake db:migrate:upgrade_plugin_migrations RAILS_ENV=production 
(in /srv/redmine.new)
rake aborted!
undefined method `deep_symbolize_keys' for "存储匹配规则后提\344\272\244":String

(See full trace by running task with --trace)