/opt/local/lib/ruby/gems/1.9.1/gems/postview-0.9.1/lib/postview/cli.rb:14:in block in commands': undefined methodsub' for :CreateCommand:Symbol (NoMethodError)
from /opt/local/lib/ruby/gems/1.9.1/gems/postview-0.9.1/lib/postview/cli.rb:11:in map' from /opt/local/lib/ruby/gems/1.9.1/gems/postview-0.9.1/lib/postview/cli.rb:11:incommands'
from /opt/local/lib/ruby/gems/1.9.1/gems/postview-0.9.1/bin/postview:6:in <top (required)>' from /opt/local/bin/postview:19:inload'
from /opt/local/bin/postview:19:in `