So I called the rep and they gave me a new license code and I was able to redownload and then I did the whole thing that was supposed to work, Uninstall, reinstall as admin, try again and then on the 2nd try again, don't try again. Total waste of time this did nothing. same old error 42016. Rep said that other people having this problem too - some but not all. And intuit is "working on it".
