same problem with the 2020 Turbo Tax Deluxe CD. After getting email saying my state tax return was rejected, I tried, but was unable to open TTX on my iMac that runs Big Sur. Tried uninstalling and reinstalling, but that didn't work either. Tried different ways to open, but no luck. On the phone with customer service for 90 minutes. They gave me a new license number to download TTX Deluxe. Again same problem. Won't open. Is this a Turbo Tax software problem, or an Apple software problem?
