From edge to stable version

Hi, I was developing an app with Edge-Rails. When 1.2.1 version
arrived I removed the rails directory within vendor and application
doesn’t work anymore.

Alse I made a gem cleanup and I got this error running webRick server:

/usr/lib/site_ruby/1.8/rubygems.rb:204:in report_activate_error': RubyGem version error: activesupport(1.4.1 not = 1.4.0) (Gem::LoadError) from /usr/lib/site_ruby/1.8/rubygems.rb:141:inactivate’
from /usr/lib/site_ruby/1.8/rubygems.rb:167:in activate' from /usr/lib/site_ruby/1.8/rubygems.rb:166:ineach’
from /usr/lib/site_ruby/1.8/rubygems.rb:166:in activate' from /usr/lib/site_ruby/1.8/rubygems.rb:37:inrequire_gem_with_options’
from /usr/lib/site_ruby/1.8/rubygems.rb:31:in require_gem' from ./script/../config/boot.rb:28 from script/server:2:inrequire’
from script/server:2

Why It looks for activesupport 1.4.0 when It’s installed 1.4.1?