At last, at last, the Update installed at last. Many many times the Update program has downloaded and tried to install that Dictionary ver 16.1.667.1 and it has failed every time to install. This morning I did an update and just for the heck of it I just did it again and WOW! that dictionary finally installed -- unless it's lying to me. I've no idea why it worked this afternoon but didn't work all those other times.