What can I do to revisit sections of my state return if the Turbotax software won't let me and I keep getting error messages ?

[jroepke]

I'm trying to revisit Property tax credits on my 2020 Illinois State Tax Return and I keep getting "Hmmm, it seems we've hit a snag", Try revisiting the last topic you were working on.  But I've already done that, and I just keep getting that same error message.

[VolvoGirl]

Are you using the Desktop program?  You can't use the Online version to access 2021 or prior.  You can only download the pdf or .tax files from online.

[Critter-3]

Have you updated the downloaded program lately ?   Do you have any OS updates that are not installed ?