Redmine

I am installing Redmine using this > http://www.mickgenie.com/blog/how-to-install-redmine-with-cpanel/

When i run "rake generate_session_store" I get the following message:

WARNING: 'require 'rake/rdoctask'' is deprecated. Please use 'require 'rdoc/task' (in RDoc 2.4.2+)' instead.

at /usr/local/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/rdoctask.rb
WARNING: 'task :t, arg, :needs => [deps]' is deprecated. Please use 'task :t, [args] => [deps]' instead.
at /home/*****/rails_apps/redmine/lib/tasks/email.rake:170

My Ruby/ RaR Information:

Ruby version 1.8.7 (x86_64-linux)
RubyGems version 1.4.2
Rack version 1.1.1
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
Edge Rails revision unknown
Application root /home/phprpg/rails_apps/redmine
Environment production
Database adapter mysql
Database schema version 20110511000000

MySQL Version: 5.0.92