This happened to me just now. A possible salve: if you're on a Mac, search in Finder for a .tax2024 file (or .tax[YYYY] for whatever year it currently is). I found an autosaved .tax2024 file from a few minutes before the crash and was able to open it and resume from where I'd left off. Of course, as soon as I reopened it I saved it, named it, moved it to a real folder on my system, etc.
Hope this helps!
