I have the exact same issue. First, bitdefender deleted my current dataprovider file. It prevents installation of either the 1.6.8 update or a full reinstallation of 1.6.8. I downloaded (again) both the update and full installation from your website less than an hour ago. I tried to reinstall from a 1.6.8 update file I had on my system and it was deleted then I downloaded the update and full install tonight. Whether Microsoft updated a definition or your file has become infected, I do not know.