I updated last weekend and again yesterday. In each case, the new version of the software still does not allow me to re-open my original tax2020 file. This bug is very easily reproducible on my Windows 10 laptop, here are the steps:
1. Start brand new Federal return, does not matter how much or how little progress you make
2. Save in-progress return to tax2020 file
3. Exit program
4a. Restart program by double-clicking tax2020 file
OR
4b. Restart program and then select tax2020 file to open
Both 4a and 4b consistently return that same error message that I and other users have reported:
Looks like your tax file is corrupt, we're having trouble opening your return.
Try opening again. If that doesn't solve the problem, create a new return.
I only have the downloadable Premier version, but it seems likely that the bug is not specific to Premier? As this is such a basic bug which affects almost every user, it seems strange that it hasn't been fixed as yet.
