I consider past versions of TruboTax records of what I filed and I NEVER update them. Doing so would corrupt my data. At least that is how I look at it. I have never had TurboTax fail to open. Well, I just tried it with 2019 and it was a bit more assertive about upgrading and would not start unless I did the upgrade but I would cancel the upgrade and the program opened without doing the upgrade.
Hope this helps.
