Uncaught TypeError: Cannot read property 'outputValues' of undefined

Ben, recreating the action step altogether did the trick, we are now able to successfully launch the apex action from the Skuid action when the page is accessed in standard Salesforce environment. When we run the action from a page within the Salesforce Community, we receive an error 503 (service unavailable). I see above Jack Sandford is having issues running this kind of Ajax request from Communities, do you have any information about this?

Thanks.