I have followed book until chapter 5 finished and it's working OK in my linux workstation when I push to Heroku, all data pushed correctly but when I try to open Heroku (http://vivid-sky-685.heroku.com)

I get a 404 message.

The page you were looking for doesn't exist. You may have mistyped the address or the page may have moved.

Below is my Gemfile for application

source 'http://rubygems.org'
gem 'rails', '3.0.5'
gem 'sqlite3'

group :development do
  gem 'rspec-rails', '2.5.0'
end

group :test do
  gem 'rspec', '2.5.0'
  gem 'webrat', '0.7.1'
  gem 'spork', '0.9.0.rc4'
end

gem 'rake','~> 0.8.7'

Any ideas what could be going wrong?

@odin here is my heroku logs , thanks 

2011-09-11T10:41:57+00:00 heroku[router]: GET vivid-sky-685.heroku.com/y dyno=web.1 queue=0 wait=0ms service=5ms status=404 bytes=728
2011-09-11T10:41:57+00:00 app[web.1]: 
2011-09-11T10:41:57+00:00 app[web.1]: 
2011-09-11T10:41:57+00:00 app[web.1]: Started GET "/y" for 93.186.31.80 at 2011-09-11 03:41:57 -0700
2011-09-11T10:41:57+00:00 app[web.1]: 
2011-09-11T10:41:57+00:00 app[web.1]: ActionController::RoutingError (No route matches "/y"):
2011-09-11T10:41:57+00:00 app[web.1]:   
2011-09-11T10:41:57+00:00 app[web.1]: 
2011-09-11T10:41:57+00:00 app[web.1]: 
2011-09-11T10:41:57+00:00 heroku[nginx]: 93.186.31.80 - - [11/Sep/2011:03:41:57 -0700] "GET /y HTTP/1.1" 404 728 "-" "Mozilla/5.0 (BlackBerry; U; BlackBerry 9300; en) AppleWebKit/534.8+ (KHTML, like Gecko) Version/6.0.0.546 Mobile Safari/534.8+" vivid-sky-685.heroku.com
2011-09-11T11:45:28+00:00 heroku[web.1]: Idl

2011-09-11T11:45:29+00:00 heroku[web.1]: State changed from up to down
2011-09-11T11:45:29+00:00 heroku[web.1]: State changed from down to created
2011-09-11T11:45:29+00:00 heroku[web.1]: State changed from created to starting
2011-09-11T11:45:30+00:00 heroku[web.1]: Stopping process with SIGTERM
2011-09-
ruby-on-rails
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