Phonegap build fails with a locales directory

I’ve recently been using PhoneGap to compile a Backbone.js app into a native iPhone app. The build process kept working fine for all platforms except iPhone which failed every time with this unhelpful error message: Oh geez. Your build failed. Sorry, but a problem occurred on the build server.

After finding no help on Google, I tried compiling only specific parts of the application and discovered that if I excluded the locales directory used by the i18next plugin, the build process went off without a hitch. It turns out that PhoneGap specifically looks for a locales directory and if it contains files in an unsupported format, it fails to build.

The simplest solution to this is to use a different directory name. If you’re using the i18next plugin, you can specify the path when you initialize the plugin:

    resGetPath: 'locale/__lng__/__ns__.json'