When I try to go to your application's profile page on Facebook, it redirects me to the home page:
www.facebook.com/apps/application.php?id=110885505679120
This is usually caused if your application is:
1) In sandbox mode. Check the Advanced settings area in the Facebook Developer area, and make sure that's not happened.
2) The application has been disabled or blocked by Facebook. Check the App Overview page for any notes from Facebook about the status of your app.
If it works when you're logged into Facebook, my guess is that it only works when you're logged in as an administrator of the app itself. That would point to the app being in sandbox mode, as admins are still allowed to use it (for testing) while normal Facebook user's can't.
Hope that helps get you started, but if you still have issues, just let us know.
Thanks,
Alex