I'm developing an objective-c app for OS X that will involve message passing with Google Chrome. I have followed the examples and downloaded the samples from here. However, I cannot get the extension to connect to my app. The path to my app in the manifest file is the absolute path to a unix-executable file found at "/Users/username/Library/Developer/Xcode/DerivedData/app_name-UUID/Build/Products/Debug/app_name.app/Contents/MacOS/app_name". I have placed the same manifest file in both the locations noted in the previous link (although I understand only one is required).
When I try to connect to the running app I get the message "Failed to connect: Specified native messaging host not found".
Can I test the messaging API while the native app is still in development? If so, how? Or do I need to package the app into a .dmg file first?