Redmine

Hello

we are evaluating Redmine as a project management for internal use.
We used to handle bugtrack with Mantis BugTrack version 1.2.11 and plan to migrate data to redmine, but i failed to make the script run
(migrate_from_mantis)

I got a NoMethodError : undefined metho 'default'.

rake redmine:migrate_from_mantis RAILS_ENV=production --trace

• Invoke redmine:migrate_from_mantis (first_time)
• Invoke environment (first_time)
• Execute environment
• Execute redmine:migrate_from_mantis
  rake aborted!
  NoMethodError: undefined method `default' for #<Class:0x00000002c4a700>
  /usr/local/rvm/gems/ruby-2.1.5/gems/activerecord-4.2.1/lib/active_record/dynamic_matchers.rb:26:in `method_missing'
  /var/www/redmine/lib/tasks/migrate_from_mantis.rake:30:in `<module:MantisMigrate>'
  /var/www/redmine/lib/tasks/migrate_from_mantis.rake:28:in `block (2 levels) in <top (required)>'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:240:in `call'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:240:in `block in execute'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:235:in `each'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:235:in `execute'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
  /usr/local/rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/task.rb:165:in `invoke'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:150:in `invoke_task'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:106:in `each'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:106:in `block in top_level'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:115:in `run_with_threads'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:100:in `top_level'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:78:in `block in run'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:176:in `standard_exception_handling'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/lib/rake/application.rb:75:in `run'
  /usr/local/rvm/gems/ruby-2.1.5/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
  /usr/local/rvm/gems/ruby-2.1.5/bin/rake:23:in `load'
  /usr/local/rvm/gems/ruby-2.1.5/bin/rake:23:in `<main>'
  /usr/local/rvm/gems/ruby-2.1.5/bin/ruby_executable_hooks:15:in `eval'
  /usr/local/rvm/gems/ruby-2.1.5/bin/ruby_executable_hooks:15:in `<main>'
  Tasks: TOP => redmine:migrate_from_mantis

Does this plugin has been yet tested on Redmine 3.0.3 ?

My current config :

CentOS 6.5
Ruby 2.1.5p273 (2014-11-13 revision 48405)

Redmine has been initialized with defaults and work well.

Thanks for your help !