Quite simply put, you have not answered my question. You have replied to it: certainly. Your replies, however, have not provided an answer.
If you don't want to answer, fine. Just say so. I can think of many reasons why a protestant would not want to answer the question:
"Do you claim to be an infallible interpreter of Scripture, or an inerrant arbiter of doctrine?"
I am truly sorry you didnt understand but the answer was there.