Try the new Lacerte Tool Hub https://proconnect.intuit.com/community/help-articles/help/fix-common-problems-and-errors-with-the-l... Try the FORCE web setup.
In the future, decline the update in program and use 20YY Lacerte Web Setup to run the update. It is much more stable. I have a shortcut to it on my desktop.
Answers are easy. Questions are hard!
