SQLite3::SQLException (cannot start a transaction within a transaction): /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `check'...Rendering ./script/../config/../vendor/rails/actionpack/lib/action_controller/templates/rescues/layout.rhtml (500 Internal Error)cannot start a transaction within a transaction/usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `check'...SQLite3::BusyException (database is locked): /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `check'