Db problems with first heroku app

My first app on heroku is having some issues:

The migration for the Users table went without a hitch on heroku, however loading the user's controller leads ot an error message. (Btw, this app is a scaffold, so I did not ass any custom code).

http://starapp.heroku.com/users

Since I am new to heroku, I am not sure how to even start finding out what went wrong. Any pointers would be greatly appreciated.

======================EDIT===========================

The Model is working fine from the Rails Console.

2011-10-08T14:36:34+00:00 heroku[router]: GET starapp.heroku.com/users dyno=web.1 queue=0 wait=0ms service=39ms status=500 bytes=728

2011-10-08T14:36:34+00:00 app[web.1]: cache: [GET /users] miss

2011-10-08T14:36:34+00:00 heroku[nginx]: 70.16.214.90 - - [08/Oct/2011:07:36:34 -0700] "GET /users HTTP/1.1" 500 728 "-" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)" starapp.heroku.com

======================EDIT 2===========================

This is what happened during the first attempted migration on heroku:

C:\Users\admin\RubymineProjects\q>heroku rake db:migrate rake aborted! Please开发者_Go百科 install the postgresql adapter: gem install activerecord-postgresql-adap ter (pg is not part of the bundle. Add it to Gemfile.)

Tasks: TOP => db:migrate => db:load_config (See full trace by running task with --trace)

C:\Users\admin\RubymineProjects\q>

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You need to add pg to your Gemfile.