This happened to me. PR-141 still popped up after I deleted it. I figured out because I answered the question "Do you rent, own , or neither?" with "rent", it automatically populates the form. I erased the form as above, and then went back and answered "neither", it doesn't pop up any more. It doesn't change anything about your state taxes if you state "neither", it just doesn't populate the renter's rebate form again. (I checked it thoroughly). Good luck!
