Redmine

Hi,

I tried to install a new instance of Redmine 1.3.0 on ubuntu 10.04 Server.
When I execute the command

RAILS_ENV=development rake db:migrate

I've the following error :

redmine@cgperlnx02:/var/www/redmine$ RAILS_ENV=development rake db:migrate --trace
(in /var/www/redmine)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
undefined method `requirement' for #<Rails::GemDependency:0x7f4bd2e90a00>
/var/www/redmine/config/../vendor/rails/railties/lib/rails/gem_dependency.rb:81:in `add_load_paths'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:301:in `add_gem_load_paths'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:301:in `each'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:301:in `add_gem_load_paths'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:132:in `process'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
/var/www/redmine/config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
/var/www/redmine/config/environment.rb:24
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
/var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:182:in `require'
/var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:547:in `new_constants_in'
/var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:182:in `require'
/var/www/redmine/vendor/rails/railties/lib/tasks/misc.rake:4
/usr/lib/ruby/1.8/rake.rb:636:in `call'
/usr/lib/ruby/1.8/rake.rb:636:in `execute'
/usr/lib/ruby/1.8/rake.rb:631:in `each'
/usr/lib/ruby/1.8/rake.rb:631:in `execute'
/usr/lib/ruby/1.8/rake.rb:597:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/1.8/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/rake.rb:607:in `invoke_prerequisites'
/usr/lib/ruby/1.8/rake.rb:604:in `each'
/usr/lib/ruby/1.8/rake.rb:604:in `invoke_prerequisites'
/usr/lib/ruby/1.8/rake.rb:596:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/1.8/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/rake.rb:583:in `invoke'
/usr/lib/ruby/1.8/rake.rb:2051:in `invoke_task'
/usr/lib/ruby/1.8/rake.rb:2029:in `top_level'
/usr/lib/ruby/1.8/rake.rb:2029:in `each'
/usr/lib/ruby/1.8/rake.rb:2029:in `top_level'
/usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/1.8/rake.rb:2023:in `top_level'
/usr/lib/ruby/1.8/rake.rb:2001:in `run'
/usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/1.8/rake.rb:1998:in `run'
/usr/bin/rake:28

Gem lists installed

actionmailer (2.3.14)
actionpack (2.3.14)
activerecord (2.3.14)
activeresource (2.3.14)
activesupport (2.3.14)
rack (1.1.1)
rails (2.3.14)
rake (0.8.7)
rdoc (2.4.2)