I am working with Xcode 6, and I\'m trying to recreate the code demoed during session 401 \"What\'s new in Xcode 6\". I\'ve added an image to Images.xcassets (called Sample)

You should now have a bundle that you can use with the standard NSImage(named:"filename_without_extension"):

Note: Because Xcode will frequently overwrite the .playground folder, I recommend using this method so the resources folder isn't getting constantly deleted and re-created.