In my experience apps created with automator on Mountain Lion don't work on a Snow Leopard machine. The opposite isn't true though: apps created with automator on Snow Leopard do work on a Mountain Lion machine.
I'm creating a very simple wrapper around a command line executable and using cocoa seems overkill. I want the app to work on as many versions of OSX as possible though, so backwards compatibility is a concern.
Any thoughts on that matter? How can I ensure that my Mountain Lion Automator app is backwards-compatible?