I tried to explain that I did this already but it may have been difficult to understand:
I JUST changed the properties > permissions option of "Allow executing file as program" WHILE posting this.. tried to open.. and it no longer says "could not display...no application...etc" ... but it also doesn't do ANYTHING now..
THIS doesn't sound like good news, however. I must be missing an important application on Mint 13..
There is no refresh button on the NEW Nautilus.. HOWEVER I DID actually exit the page and return to it and it still doesn't open or do anything.