No such file or directory - /vendor/plugins on rails 3.0

[Lukom]

I have Rails 3 app and I'm trying to setup filemanager. What I've done:

1. added to Gemfile:
   gem 'filemanager'
   then bundle install
2. added to application.rb after require 'rails/all':
   $FM_OVERWRITE = true
   require 'filemanager'
   then rails server and got exception:
   DEPRECATION WARNING: RAILS_ROOT is deprecated. Please use ::Rails.root.to_s.
   C:/Ruby187/lib/ruby/1.8/fileutils.rb:1236:in `mkdir'
   ...
   C:/Ruby187/lib/ruby/gems/1.8/gems/filemanager-0.3.1/lib/filemanager.rb:16
   ...
   D:/projects/lukomorg/config/application.rb:7
   ...
   Uncaught exception: No such file or directory - /vendor/plugins

[scorpio]

It doesn't work in bundle environment, I will fix it later, maybe need several days. Before that, you can copy filemanager.yml to config/, copy related folder to app/controllers/ and public/ manually, that should be work.