I follow the instructions from the site you gave me,
(1) I download a plugin and paste here C:\Bitnami\redmine-2.6.2-0\apps\redmine\htdocs\plugins
(2) Redmine command prompt:
$ bundle install --without development test postgresql sqlite
$ ruby bin/rake redmine:plugins RAILS_ENV=production
What's the meaning of the last line ?
Migrating recurring_tasks (Recurring Tasks (Issues)...