The latest update of MTD (2.114) also crashes. The only thing I've found to work is to un-install the present version that you have now, and re-install the last previous version 2.110, that still works with Big Sur. 11.7.0. That's what I'm still running on my MBP. Be sure and turn OFF automatic updates, because you don't want to update until(if ever) Microsoft/Apple gets their act together. They changed the app sometime in mid-december of last year, and restored my app from my time machine back-up that was from the early part of December.