Help: Locomotive - error

In the browser I have this error, I’m a newbie.

NameError in NotasController#index

uninitialized constant Nota

RAILS_ROOT: /Users/marco/Sites/Dev/notas
Application Trace | Framework Trace | Full Trace

/Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/
lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/
dependencies.rb:266:in load_missing_constant' /Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/ lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/ dependencies.rb:452:inconst_missing’
/Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/
lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/
dependencies.rb:464:in const_missing' /Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/ lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/ inflector.rb:250:inconstantize’
/Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/
lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/core_ext/
string/inflections.rb:148:in constantize' /Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/ lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/ pagination.rb:195:inpaginator_and_collection_for’
/Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/
lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/
pagination.rb:130:in paginate' #{RAILS_ROOT}/app/controllers/notas_controller.rb:12:inlist’
#{RAILS_ROOT}/app/controllers/notas_controller.rb:3:in index' /Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/ bin/mongrel_rails:16:inload’
/Applications/Locomotive2/Bundles/standardRailsMar2007.locobundle/i386/
bin/mongrel_rails:16

This occurred after I run the command ruby script/generate scaffold
(table name).