I have the exact same issue you described with TurboTax 2024 Premier on Mac Desktops. Happens on two different Macs (M3 Macbook, M1 Mac Mini) both running 15.2. Right after checking for updates and getting the message "No new Forms to update" the TT shuts down (quits or crashes) and does not allow you to open any files. Intuit support said they were sorry, they don't have a fix and I need to call Consumer Resolutions. They hinted that my software key might be the issue, I bought TT at Costco.
