[MacRuby-devel] Using hotcocoa to create a project

Hi, when I try to create a project using hotcocoa as described in the MacRuby Postie tutorial http://www.macruby.org/hotcocoa/getting_started.html $ hotcocoa Postie I get this error: /Users/jeremysmith/.rvm/gems/ruby-1.9.2-p180/gems/hotcocoa-0.5.1/lib/hotcocoa/template.rb:20:in `gsub!': invalid byte sequence in UTF-8 (ArgumentError) Any ideas? Thanks, Jeremy