Problems with AR.find

app.rb

class MainDB::App < ActiveRecord::Base
  establish_connection :main_db
  set_table_name "APPLICATIONS"
end

database.yml

main_db:
  adapter: mysql2
  database: "..."
  username: rails
  password: "..."
  host: "..."

gistfile1.txt

$ rails console
Loading development environment (Rails 3.0.7)
ruby-1.9.2-p180 :001 > MainDB::App.find(1002169)
NoMethodError: undefined method `eq' for nil:NilClass
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/whiny_nil.rb:48:in `method_missing'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.7/lib/active_record/relation/finder_methods.rb:299:in `find_one'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.7/lib/active_record/relation/finder_methods.rb:289:in `find_with_ids'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.7/lib/active_record/relation/finder_methods.rb:107:in `find'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.7/lib/active_record/base.rb:439:in `find'
	from (irb):1
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands/console.rb:44:in `start'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands/console.rb:8:in `start'
	from /Volumes/Users/joelyou/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands.rb:23:in `<top (required)>'
	from script/rails:6:in `require'
	from script/rails:6:in `<main>'

Solution: the table name was "applications" not "APPLICATIONS"