Okay so its coming back to me slowly 
The actionResult.returnObj, value:null is normal. Happens on all function calls for whatever reason. and the undefined\AddFile is normal too. The fact that no other info returns is the problem. I think youneed to recreate your kinetic-function widget. I believe, if at anytime you clicked Dataset btn on response page, it breaks.
Before dataset btn:
After dataset btn:
studios strikes again! sorry.