Just wanted to add another name to this complaint; I have literally never had this kind of issue with TurboTax and have used it successfully for over 20 years. I'm amazed that the program would suddenly run into a fatal crash (and while attempting to send error data, no less!) and it would not be addressed by the programming team.
FWIW, in case anyone is reading this, I'm on a (desktop) iMac running Big Sur 11.2.3. I've not had to create an "alternate user" like chrisgh, but I have deleted the Turbotax preferences file com.intuit.turbotax.2020.plist, deleted my copy of Turbotax, and downloaded a fresh copy. When asked via pop-up window, I have purposely NOT sent the error report to Turbotax in order to avoid crashing. This seems to work, though the program is much, much slower than before. Something is really wrong that needs addressing, Intuit!
