LoadError (no such file to load -- pg), OS X, Rails 3, Ruby 1.9.2, Postgres

Running OS X 10.6.4, wanted to work with the latest stuff, built Ruby
1.9.2 , installed rails 3.0.0 & pg 0.9.0 using gem, the simplest
example rails app gives me this whenever I try to access anything
(except plain HTML in public):

Started GET "/" for 127.0.0.1 at 2010-10-13 13:58:35 -0600

LoadError (no such file to load -- pg):

...Followed by messages about rending error templates...

The which command shows that the path is right, ruby & rails & gem are
all found in /usr/local/lib.

Also, first thing I did after the install was create a small
standalone data import script. It requires rubygems and active_record,
and connects to the database and selects and inserts data (using
active record subclasses) just fine.

Besides rails & pg, the only other thing I've installed is the rb-
appscript gem.

Do you have "gem 'pg'" on your Gemfile?

Ah, that was the problem. I was following a tutorial which did not mention this new aspect of Rails 3 configuration.

Thanks much :wink: