All, I added a new rake task for HotCocoa - deploy To do this I also updated the Rakefile itself. Now if you try and macrake one of your existing HotCocoa projects you may see this: Your Rakefile needs to be updated. Please copy the Rakefile from: /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/share/ hotcocoa_template/Rakefile This is instructing you to replace your existing Rakefile with one mentioned in the error message (be careful if you have modified it!). The new Rakefile is very minimal: require 'hotcocoa/application_builder' require 'hotcocoa/standard_rake_tasks' task :default => [:run] The standard tasks (clean, run, build, deploy) are now in the standard_rake_tasks.rb file. This way we can keep these tasks up to date without having to update your Rakefile in the future. All new Rakefiles when you execute hotcocoa <app> will include the new Rakefile. The deploy task is just like the build task in that it creates YourApp.app, but it additionally copies in the MacRuby framework. This should enable you to take that .app and share it with another who does not have MacRuby installed. Best, Rich