Redmine-Scrumbler 安装过程中出现的问题

安装过程中出现的问题
1.error undefined method `application'
  If you've checked out the plugin directly from github into your vendor/plugins folder, just go to vendor/plugins/redmine_scrumbler and do a git reset --hard a588932639c69ba7736a8b46ff4c683186dab94d
 
  Browse to Scrumbler plugin directory.
      cd $REDMINE_HOME/vendor/plugins/redmine_scrumbler
 
  Update the plugin.
       git pull
 
  Execute plugin migrations.
       RAILS_ENV=production rake db:migrate:plugin NAME=redmine_scrumbler

  Restart the Redmine.
       with Redmine 1.4.x:ruby script/server webrick -e production
       with Redmine 2.x:ruby script/rails server webrick -e production