Installing plugin failes. Expected /var/www/chiliproject/chiliproject/app/models/user.rb to define User (Bug #1147)

Hello Experts,

First of all, I'm not an expert on ruby/rails/linux. I have set up a Redmine tracker at my previous job under windows, and now the chiliproject under linux in a VM . I choose chiliproject because my feeling is that's it is much more alive.

I installed chiliproject by following the instructions provided. so far so good, works excellent. Very nice.

Now I want to try the taskjuggler plugin (worked with that before) because I want scheduling functionality combined with a good web based issue tracker. (IMO scheduling would be an absolute 100% winning addition to Chiliproject. Say goodbye to MS Project).

• I cloned from https://github.com/chris2fr/redmine_taskjuggler to /var/www/chiliproject/chiliproject/vendor/plugins/redmine_taskjuggler

• next in the console:
  

  /var/www/chiliproject/chiliproject# bundle exec rake --trace db:migrate:plugins RAILS_ENV=production
  

I get the following error:

root@bas-VirtualBox:/var/www/chiliproject/chiliproject# bundle exec rake --trace db:migrate:plugins RAILS_ENV=production
** Invoke db:migrate:plugins (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Expected /var/www/chiliproject/chiliproject/app/models/user.rb to define User
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:452:in `load_missing_constant'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:118:in `const_missing'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:463:in `load_missing_constant'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:122:in `const_missing'
/var/www/chiliproject/chiliproject/app/models/project.rb:27
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:291:in `require_or_load'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:451:in `load_missing_constant'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:118:in `const_missing'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:463:in `load_missing_constant'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:122:in `const_missing'
/var/www/chiliproject/chiliproject/app/models/principal.rb:19
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:291:in `require_or_load'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:451:in `load_missing_constant'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:118:in `const_missing'
/var/www/chiliproject/chiliproject/app/models/user.rb:17
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:291:in `require_or_load'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:250:in `depend_on'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:162:in `require_dependency'
/var/www/chiliproject/chiliproject/vendor/plugins/redmine_taskjuggler/lib/issue_patch.rb:1
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:184:in `require'
/var/www/chiliproject/chiliproject/vendor/plugins/redmine_taskjuggler/init.rb:5:in `evaluate_init_rb'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin.rb:158:in `evaluate_init_rb'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin.rb:154:in `evaluate_init_rb'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin.rb:48:in `load'
/var/www/chiliproject/chiliproject/config/../vendor/plugins/engines/lib/engines/plugin.rb:45:in `load'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin/loader.rb:38:in `load_plugins'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin/loader.rb:37:in `each'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/rails/plugin/loader.rb:37:in `load_plugins'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:369:in `load_plugins'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:165:in `process'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in `send'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/initializer.rb:113:in `run'
/var/www/chiliproject/chiliproject/config/environment.rb:45
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:547:in `new_constants_in'
/var/lib/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
/var/lib/gems/1.8/gems/rails-2.3.14/lib/tasks/misc.rake:4
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `execute'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `invoke_prerequisites'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `run'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/var/lib/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/var/lib/gems/1.8/gems/rake-0.9.2.2/bin/rake:33
/var/lib/gems/1.8/bin/rake:19:in `load'
/var/lib/gems/1.8/bin/rake:19
Tasks: TOP => db:migrate:plugins => environment

I tried the following without success:
http://www.redmine.org/boards/2/topics/9897

Can anybody help in solving this?

Much appreciated,
Regards,
Bas