WhiteHawk7

So I edited an image, and it ended up creating a .pdnBak file. It adds .0.pdn.Bak onto the end of the file (e.x Profile.png -> Profile.png.0.pdnBak) and for some reason I cannot delete it even though I have admin perms. Any ways to get rid of it? I can't even move it or rename it to change the extension. Pics: