So I developed my application on my computer, with Rails 2.1
After that I did a rake rails:freeze:gems. That sent Rail gems was sent
to /vendor/rails
I sent my application to server, configured, and everything was working
fine, using Rails 2.1 Freezed Version.
Now I need to install a plugin (will_paginate).
But when I try to 'require' it, it says my Active Support is too old.