Error while running test project

[r.ma...@nextgeni.com]

app: /Users/softnet/Library/Developer/Xcode/DerivedData/CoreDataBooks-clnivryriehincapfopylabfumju/Build/

Products/Debug-iphonesimulator/CoreDataBooks.app

devices:

  iPhone Simulator:

  screen: low_ios5

    simulator: iPhone (Retina 4-inch)

    default: true

this is my config.yml file

when i run this -> ZUCCHINI_DEVICE="iPhone Simulator" zucchini run features/add_book/feature.zucchini

this error is produce please tell me how??? i am using iOS 8 , xcode 6 

/Library/Ruby/Gems/2.0.0/gems/zucchini-ios-0.7.3/lib/zucchini/config.rb:12:in `read': Not a directory - /Users/softnet/Documents/CoreDataBooks/zuchinitest/features/add_book/feature.zucchini/support/config.yml (Errno::ENOTDIR)

from /Library/Ruby/Gems/2.0.0/gems/zucchini-ios-0.7.3/lib/zucchini/config.rb:12:in `base_path='

from /Library/Ruby/Gems/2.0.0/gems/zucchini-ios-0.7.3/lib/zucchini/detector.rb:10:in `execute'

from /Library/Ruby/Gems/2.0.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'

from /Library/Ruby/Gems/2.0.0/gems/clamp-0.6.5/lib/clamp/subcommand/execution.rb:11:in `execute'

from /Library/Ruby/Gems/2.0.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'

from /Library/Ruby/Gems/2.0.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'

from /Library/Ruby/Gems/2.0.0/gems/zucchini-ios-0.7.3/bin/zucchini:15:in `<top (required)>'

from /usr/bin/zucchini:23:in `load'

from /usr/bin/zucchini:23:in `<main>'