RoR running on Localhost but not on Heroku

Hey there,

I have been following http://ruby.railstutorial.org/chapters/beginning#top since yesterday and
I am going good on my machine with ROR. I have used RailsInstaller for my environment on Windows7. My two apps are working good on my localhost:3000 but as I put them into Heroku, I am getting error, respectively, http://meinkampf.heroku.com and http://smoothipod.heroku.com. I wonder why? :0

As I am a noob, I am just following as is said on the tutorial but I am getting these error. May be it is some minor error, but since I am facing this, haven’t found any solution for this yet. So I would really appreciate any kind of help or links to it.

Thanks in advance.

What "error"? You need to look at your logs to see what is actually
happening...