i have the folowing error when i try to install openproject:
i have a redmine already installed on this server:

Creating database
dev_openproject already exists
openproject already exists
Migrate Core
rake aborted!
Configuration is not a module
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:547:in `new_constants_in’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:547:in `new_constants_in’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:547:in `new_constants_in’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:547:in `new_constants_in’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:76:in `require’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:76:in `require’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:72:in `each’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:72:in `require’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:61:in `each’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler/runtime.rb:61:in `require’
/var/lib/gems/1.8/gems/bundler-1.5.1/lib/bundler.rb:131:in `require’
/home/mosnier/openproject/config/boot.rb:58:in `load_gems’
/var/lib/gems/1.8/gems/rails-2.3.18/lib/initializer.rb:164:in `process’
/var/lib/gems/1.8/gems/rails-2.3.18/lib/initializer.rb:113:in `send’
/var/lib/gems/1.8/gems/rails-2.3.18/lib/initializer.rb:113:in `run’
/home/mosnier/openproject/config/environment.rb:39
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:547:in `new_constants_in’
/var/lib/gems/1.8/gems/activesupport-2.3.18/lib/active_support/dependencies.rb:182:in `require’
/var/lib/gems/1.8/gems/rails-2.3.18/lib/tasks/misc.rake:4
Tasks: TOP => db:migrate => environment
(See full trace by running task with —trace)
Something went wrong :(
Installation aborted.
mosnier@ubuntu:~/openproject$