Sequel::Error::AdapterNotFound: Could not load postgres adapter:This probably means that you don't have the postgres adapter installed. One quick way to fix problem is to install the postgres gem via rubygems:
no such file to load -- postgres
from /usr/local/lib/ruby/gems/1.8/gems/sequel_core-1.0.5/lib/sequel_core/database.rb:383:in `adapter_class'
from /usr/local/lib/ruby/gems/1.8/gems/sequel_core-1.0.5/lib/sequel_core.rb:36:in `method_missing'
% rubygems install -r postgresThat should solve the dependency requirement problem.