Redmine

Hi, I just installed the latest version of redmine with rails 3.2.6. It works fine on my machine, which uses mysql, but I uploaded it to heroku, which uses postgres, I get this error related to the Setting model and I can;t view any page:

Started GET "/" for 24.124.99.17 at 2012-06-22 03:08:46 +0000
Processing by WelcomeController#index as HTML
Completed 500 Internal Server Error in 5ms

ActiveRecord::StatementInvalid (PG::Error: ERROR:  relation "settings" does not exist
:SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull
FROM pg_attribute a LEFT JOIN pg_attrdef d
ON a.attrelid = d.adrelid AND a.attnum = d.adnum
WHERE a.attrelid = '"settings"'::regclass
AND a.attnum > 0 AND NOT a.attisdropped
ORDER BY a.attnum
):
app/models/setting.rb:152:in `check_cache'
app/controllers/application_controller.rb:81:in `user_setup'

any thoughts? Thanks!