Routing Error: Recognition failed for ""

Hi,

I am trying to move a rails application off my local machine to a
hosting company, and am having some issues. I get the "Ruby on Rails:
Welcome Aboard" screen at the top level of my app, but when I try to go
to the actual content (located one folder deeper), I get the error
mentioned in the subject line. When I click on the "About your
application's environment" link on the Welcome Aboard screen, I get a
similar routing error: Recognition failed for "info/properties"

Has anybody had similar issues, or have any ideas or suggestions as to
what might be happening?

Thanks,

Simon