Error when generating app with Bowline for Ruby

When I try to generate an app with bowline-gen app helloworld almost all the

... more files
... more files
[ADDED]  config
[ADDED]  config/initializers
[ADDED]  config/first_run
[ADDED]  app_first_run
开发者_JAVA百科[ADDED]  .gitignore
[ADDED]  public/icon.png
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/fileutils.rb:1216:in `chmod': No such file or directory - /Users/ma/dev/ruby/_bowline/helloworld/script (Errno::ENOENT)

I have tried reinstalling both bowline and bowline-bundle separately with

sudo gem uninstall bowline
sudo gem uninstall bowline-bundle

But I have no clue where I am at. Could someone please enlighten me on this issue, would be very greatful!

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You are using Ruby 1.8, bowline requires 1.9.1 at least