Tried what Flyguy had suggested. The installation started but got stuck again. I then had to follow the instructions in:
https://ttlc.intuit.com/community/bugs-and-error-messages/help/error-1719-windows-installer-service-...
and then try the manual install. That worked this time.
I am appalled at the lack of support from Intuit for a key product of theirs. I have also noticed that the program is painfully slow to get started.
