Dev mode ok, prod mode application failed error

I’m new to RoR and trying to deploy a RoR2 app. It works in development
mode, but when I switch to production mode by uncommenting the
ENV[‘RAILS_ENV’] ||= ‘production’ line in config/environment.rb, I get
the dreaded “application failed to start properly” unhelp error.
This is on a remote hosting service (, so I don’t have
any control over the system. They are using Ruby 1.8.6, Rails 2.2.2, and
apache2 v2.2.10.

Where can I find log info for my app? The log/production.log is empty,
and I can’t get to the apache log. Where else can I look?

What could be the problem? I looked at my .htaccess file, and all is
well (it worked in dev mode). I checked my permissions; all seem OK (and
they worked in dev mode). I have uncommented and modified the
RAILS_GEM_VERSION = ‘2.2.2’ unless defined? RAILS_GEM_VERSION line in
environment.rb as well (this caused me a problem in devl mode, so it was
the first thing I checked in prod mode).

Thanks in advance for any help! Let me know if you want to see