upgrade to chiliproject 3.5.1 broke chiliproject when scrumbler installed

[derEremit]

bundle exec rake db:migrate:plugin NAME=redmine_scrumbler RAILS_ENV=production

rake aborted!
undefined method application' for Rails:Module /var/www/chiliproject/vendor/plugins/redmine_scrumbler/init.rb:22:inevaluate_init_rb'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:158:in evaluate_init_rb' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/core_ext/kernel/reporting.rb:11:insilence_warnings'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:154:in evaluate_init_rb' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:48:inload'
/var/www/chiliproject/config/../vendor/plugins/engines/lib/engines/plugin.rb:45:in load' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:38:inload_plugins'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:37:in each' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:37:inload_plugins'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:369:in load_plugins' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:165:inprocess'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:113:in send' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:113:inrun'
/var/www/chiliproject/config/environment.rb:45
/var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:in require' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:inrequire'
/var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:547:in new_constants_in' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:inrequire'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/tasks/misc.rake:4
Tasks: TOP => db:migrate:plugin => environment
(See full trace by running task with --trace)

bundle exec rake db:migrate:plugins RAILS_ENV=production

rake aborted!
undefined method application' for Rails:Module /var/www/chiliproject/vendor/plugins/redmine_scrumbler/init.rb:22:inevaluate_init_rb'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:158:in evaluate_init_rb' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/core_ext/kernel/reporting.rb:11:insilence_warnings'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:154:in evaluate_init_rb' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin.rb:48:inload'
/var/www/chiliproject/config/../vendor/plugins/engines/lib/engines/plugin.rb:45:in load' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:38:inload_plugins'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:37:in each' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/rails/plugin/loader.rb:37:inload_plugins'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:369:in load_plugins' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:165:inprocess'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:113:in send' /var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/initializer.rb:113:inrun'
/var/www/chiliproject/config/environment.rb:45
/var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:in require' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:inrequire'
/var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:547:in new_constants_in' /var/www/chiliproject/rake/ruby/1.8/gems/activesupport-2.3.15/lib/active_support/dependencies.rb:182:inrequire'
/var/www/chiliproject/rake/ruby/1.8/gems/rails-2.3.15/lib/tasks/misc.rake:4
Tasks: TOP => db:migrate:plugins => environment