cannot exclude a file from Sonar(?)

Since the recent version update of Norton 360, it keeps flagging "PUA.OpenCandy" inside an image burning software setup file that has been sitting on my drive since 2013.

During the first time it found the PUA, Norton 'found' it six times, all six times in the same file, same location. Knowing that it was low risk and in a reliably recommended file, I told Norton to exclude it, which it did ... FIVE times. Now I get 'just' a single hit every couple of hours telling me to fix this -- the problem is, each time I tell Norton to exclude PUA, it tries, then fails.

Even after I deleted the image-burning file.

Even after I deleted the file permanently from the recycle bin. (Norton still says the file is located on my C: drive.)